Which ones are missing? (Probably an oversight.)

quite a few seem to be missing, or just not working.

Juggernaught hull
Superstructure hull
Miner hull

adaptive laser
Cloaking Mesh
Self Destruct Device
Smoother Mechanism

also in the mod I could see but was unable to unlock both the Payload amplifier, and the Warhead. wouldn't show a cost on it and when I try to tell it to reseach it won't start.

Adaptive Lasers don't exist yet, period. I think they might be in the sandbox, but they still need balancing and stuff.

As for the rest... yeah, looks like it's missing. Not sure when or if it'll be put in; I don't have a lot of involvement with that tech grid (or any tech grid barring the Progenitor subgrid).

Payload Amplifier seems to be missing a secondary unlock. Alar must have forgotten to give them one when he removed the primary unlock. Same thing goes for Warheads. >.<

Even with the missing things I like of like the unique tree a bit more than the normal one just because its so much easier to know where everything is, and I don't need to go hunting through the maze like mass of techs that are all over the place in no order that I can see.