Best of luck! I was also thinking of doing it as my next bigger project, but I dropped it after just making the game pause & a lock image appear when using a locked door 😅 (didn't proceed due to laziness, not because I think it's undoable - I won't be getting back to that though).
If you want, here are some ideas/thoughts on what I was planning, maybe some inspiration:
- Stealth topic: If the game is paused while lockpicking, is it too easy then? Vanilla MW, as crude as it is, does lockpicking in real time, so you have to account for guards etc. Should the minigame pause the gameplay, or maybe it should be in real time? (so while lockpicking you're always in danger of being caught? just an idea)
- Details on MW security skill and lockpicks: https://en.uesp.net/wiki/Morrowind:Security - interesting factors which could impact the minigame: security skill, lockpick durability, lockpick quality, player fatigue, player luck, player agility, lock level.
- Should you be blocked from lockpick attempt when the lock difficulty is too high, or should you be allowed to try a minigame, maybe with some penalties?
- An option to autoresolve the minigame? (This could just recalculate the success based on vanilla formulas)
- What about trap probing? A different minigame? Or completely out of this mod?
Eyecandy ideas (low priority):
- Different-looking locks based on what you are picking: doors, chests, extra-security vaults from TR etc. Just different textures, like https://www.nexusmods.com/skyrimspecialedition/mods/58224 does
- Different texture per lockpick (every quality level, skeleton key, ||cutlery lockpicks|| from TR)