Please for god’s sake do no ever add another stealth mission into the game at any point. It was a bad idea. They are at best trivial and at worst insanely annoying and dilliatory.
I am begging you. Do not continue to add them for any reason whatsoever.
I thought they were pretty fun. Different.
I know some people like them, but they really should be skippable. If you fail for any reason you have to do the entire quest again, including dialogue. The one where you are locked to half speed is particularly bad. At the very least implement checkpoints of some kind.
Honestly I didnt find them very difficult. The lack of check points IS very annoying though. That should be changed imo.