Average completion rate and games that have been permanently removed from an account
Every account has in its stats a percentage indicating the average % of achievements earned in their games (Shortened to ACR in this suggestion). The way this system currently works is that it takes into account all games in which the user has earned at least one achievement, this is the case even if the stats are cleared through the console or the game is removed from the user's account for any reason, be it manually or not.

Problems it causes

This leads to situations where the ACR can be inaccurate. For example, if a user plays a game that gives you an achievement for simply starting it or doing something very early on and the game happens to break, they are permanently locked out of 100% ACR on their profile, as they cannot access the game's content and it will still be considered for stats even if the user doesn't own it anymore. Now, you may counter this by blaming the user for not checking the minimum requirements before playing, but there are cases where the game breaks even if you are well above these requirements (This happened to me with The Legend of Bum-bo, i tried it on 3 different machines, 2 of which were well above the minimum requirement, and the game was stuck in loading screen hell in every single one of them)

This also applies to cases where a user tries out a new game, maybe even for free, be it for themselves or by request of friends. Even if they only play for 30 minutes to see if they like it, they are very likely to have already earned an achievement and are permanently locked from 100% ACR unless they pour hundreds upon hundreds of hours on a game they might even not like or cannot run properly, essentially punishing them by compromising their profile stats for trying out a new game. This could be resolved by having multiple accounts for games, but this is eats up a slot in a steam family/locks you into F2P games only and is overall very convoluted just for the sake of preserving their ACR percentage.

If this were to be changed, it would allow players to more freely try out new games and focus on getting the achievements for the ones they like, while not being compromised for having a machine that can't run some games. It would also help people like me, that want to achievement hunt but have been haunted by their past selves that carelessly started and barely played random online games.

Arguments against it

"This would allow people to abuse the system to increase their ACR"

While yes, you could use this feature to "unfairly" increase your Average Completion Rate, in most cases it would be flushing money down the toilet. Furthermore, if a person wanted to cheat achievements, they would just use SAM and get their ACR up anyway, while those that do not want to cheat would not abuse the feature, and just use it to remove broken games and/or games that they played in the past that they do not enjoy or don't have support anymore.

"If a person wants to get 100% ACR, they need to suck it up and get it legitimately"

Firstly, this doesn't address the cases where the game is broken on their machine or doesn't run. Secondly, this forces the person to suffer through games they were just trying out and can fill their profile with games they don't enjoy (i, for example, have been asked by friend to try out Paladins and Overwatch 2, now i know i do not enjoy online games and want nothing to do with these two, but must dredge through them if i want a better ACR [note: these two combined would be 600+ hours, the games might not even exist at that point, and these aren't the only online games i've played]).

"By allowing this, getting a high ACR would be a lot easier and would remove its merit"

While true, i believe it is still worth it to implement these changes, as if a person would like to increase their ACR, they would need to remove a lot of games, because if they are to "cheat" it would happen very early on and at that point they might as well just use SAM to be able to keep their games. Furthermore, a few hard 100% are much more impressive than a 100% ACR full of easy games, so nothing much would change other than that people who were not as cautious in the past would still be able to get a good %.







So yeah, i believe this change would do more good than harm and seems like a rather simple fix: only consider games in the user's account. It seems like it was already implemented a few years ago but was walked back on, so it's very much doable