1. what do you mean enemy types..? If you mean enemy RTP assets.. then not many, maybe 50 or so, you'll certainly need to add more. IF you mean how many enemies in total can you have.. i believe that as many as you like. You can also import any art or characters youve had custom made yourself into the engine so you have the option to custom make or buy enemy battler packs from websites.
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2. I believe theyve made hthis addition few months back, you can now have 8 people in party and swap them in and out during battle as they are put into front/back row.
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3. You can edit whatever you like, but there's copyright in place so you cant share or use in other engines, or claim the art changes as your own materials. etc..
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4. I believe there is a way to do this, if not in the engine settings itself then definiteyl by C# script.
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5. YES! The engine uses effekseer as it's animation base but you can also use frame sheet animations (akin to like early rpg maker systems) as spells too.
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6. Yes but its kind of a weird one this, I think it's basically swap out character model for a different one. So a transformation would be done with a mix of animation spell and just simply swapping the character model.

1.
I do not quite understand the question, can you provide exemples of what you mean?
As far as I know, it is possible to make as many enemy types as you need, you can customize the AI to do x action turn 1, then y action turn 2 etc for each enemy or you can let the enemy decide their moves depending of their personality (Normal = Select random action, Cunning = targeting weaker oponents etc.)

2.
Yes, they even provides few sample projects and in one of them, there is a 6 member party in battle! (But you can set a 8 party member if you want)!

3.
Yes.

4.
You can set how much stat each character will earn at each level but if you want, you can set the stat for each level of the curve you for exemple after level 21 you can set the player not earning any more MaxHP effectively capping it.

5. and 6.
I'm not sure about these, I think it is possible but I have not tried!

7.
Yes, you can carry the amount of item you can carry in the"Game Definition", by default it is set to 999

At, 1:

What i mean bout enemy types like for example,

Goblin
Troll
Ogre
Oni
Gargoyle
Giant Demon
Merman
Killer Bee

I saw you can make a RPG to look like Octopath Traveler or a 3D looking RPG,

I'm more interested in the Octopath Traveler look more,

But wondering how many enemy selections are they are in the Octopath Traveler look alike style by default.

If they not many, I was gonna buy this later, i don't think i can add enemies from RPG Maker MV or MZ,

Since i not good at creating Monsters or Characters from Scratch yet,

I just want to make a RPG just for fun, not charging money.

---

I have a idea for game for years, but using a below average amount of it on this or any RPG Creator.

This one caught my attention, but kinda hesitant on buying it now.

Originally posted by RYURYUNEKO:

At, 1:

What i mean bout enemy types like for example,

Goblin
Troll
Ogre
Oni
Gargoyle
Giant Demon
Merman
Killer Bee

I saw you can make a RPG to look like Octopath Traveler or a 3D looking RPG,

I'm more interested in the Octopath Traveler look more,

But wondering how many enemy selections are they are in the Octopath Traveler look alike style by default.

If they not many, I was gonna buy this later, i don't think i can add enemies from RPG Maker MV or MZ,

Since i not good at creating Monsters or Characters from Scratch yet,

I just want to make a RPG just for fun, not charging money.

---

I have a idea for game for years, but using a below average amount of it on this or any RPG Creator.

This one caught my attention, but kinda hesitant on buying it now.

Shocker.. Octopath Trraveller.. combines retro Super NES-style character sprites and textures with POLYGONAL environments and high-definition effects. So OT is made in 3D for environments and then 2D sprites for characters. As by the words of the developers of that game.. So you need to STOP thinking it's all 2D, 'cos it's not. Its just the 16bit(ish) sprite/art work that's making it LOOK like its completely 2D.
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As far as 2D sprite monsters, there's only available what you get in the RTP for Bakin, which is not much (about 20-25 enemies??) and NONE are in the style of Octo. THIS 100% you'll need to custom make or buy the assets OR look for a 16bit character maker/generator somewhere elese, or make yourself. You wont be able to add MZ or MV assets to Bakin due to license use, unless stated in the terms of use by that creator.
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Any type of game development is gonna cost you money, be it for artwork, custom stuff etc, you'll run into a point where you NEED something and the engine hasn't got it and you've not the skill to make it yourself, so you will need to outsource for whatever that is.. THIS happens often with these types of engines. music, sprites, busts, etc. Even someone making a script from C# for your game is going to cost you, 'cos no one wants to produce work for free that takes up their time. THOUGH.. you'd have a better chance in Bakin community of actually finding someone who will offer up some free time over the RPG Maker community, and possibly not charge you a 2nd mortgage for the end product(s).
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THIS might be worth you watching to get a better understanding of how OT was actually made, it's really inteesting, put on subs.. https://www.youtube.com/watch?v=K6wW0pO08LE

Only reason i use the Octopath Traveler style, everytime i use 2D,

I get responses like, it's like Octopath, like 15times , so eh.