Lists - maximum length and stability

[ArcaneSmith]

So, two somewhat noobie questions about lists:

 

Is there a maximum length for form lists, leveled lists etc? If there is, what is it for each?

Any widely known bugs/issues/limitations that I should know of when modifying lists in-game via script?

 

I know I'm getting some odd behavior with RemoveAddedForm() and Revert() in form lists (like hereand here)and I can't get the game to save stuff added to leveled item lists via script. I've also read about form lists getting unstable in some savegames, glitching mods that use them. I'm afraid it's only gonna get worse. Does it really get worse? Please point me to some info before I play with these any further. It's getting frustrating here so I'd appreciate any input.