Would be nice to have more upgrades having some small story. Yeah ones you do a lot are not fun. But you get upgrade but it changes almost nothing. Like majority of development is bare bones in company route. You get to next stage of development and please go on grinding. never rewarded not even choices matter much on story much. No need depth but even if each choice has small passage or two to see once done it is already ok.
Another thing I dunno if it would fit more into personal mode or other side role one where you trying to resist being drone. But I like idea of dronification system kinda experimenting and seeking ways to work around personality. I would say even simple graph on certain actions, and how suit reacts causes those actions.
For example let's say suit has tools of coercion, enforcement, reward. They have kinda levels low level is just a nudge, high level is straight override. So for drone effect coercion is when someone decides to act in certain way, but they find instead pushed doing other things, low levels you can buy something else at shops slip something in correct way. It is just happens want to look that movie hey no you are finding switching channel to watch something else. It is subtle. Higher levels you can think doing something want to do something but alas. Mostly may be used to cement habits or corrupt them to guide. It is subtle enough to cause stress. Certain characters(or character if it is for example personal mode). More coercion settles in the more they would do from get go like habbit, even if it is not as rewarding as they would like.) (Game mechanics no matter what subject prefers there is chance it would act differently, maybe notice after a while, but attribute own mistake or tiredness.)
Override it is simple way to prevent undesired actions, or force to do certain things. Starts simple of action just being not fun uncomfortable hard to do or push to do and requiring to fight with will power, like constant push you aware it is alien but fight is lost. Higher levels would just outright install triggers which would cause subject act beyond their will, or stop doing certain things. It is mostly way to limit undesired behaviors, or enforce subject to follow into certain actions, as it settles in the subject would find resisting less and less , but it should stay unchanged lots of changes would make subject learn there are no rules so get most out of situation. Think of it like direct reprogramming. (It is just simple make drone act the way it supposed to act, make human resistance futile to programming, own willing or not.)
And last reward, or reward avoidance, you just fiddle how preferences of drone work. It does not changes actions directly but if drone acts correctly you can change how satisfying action is. Lower levels is like small slow burning corruption, and higher levels cause frustrations of acting in undesired way, or strong sense of pleasure or fulfillment of acting correctly. And so changes probability to perform certain actions or in other words preferences.
So character gets to be affected in 3 directions and have 3 opinions on being made act in certain way(shared for all actions, as simple model without farther convolution) But fun part you get to mess around with target and kinda dronification becomes something personal and more at it. Sorry for writing if you have your own ideas. And this one is not super interesting.