Most of those are obvious exploits, so the easiest solution would be to just not abuse them.
BTB's Mod will cover almost everything on the list though. Perhaps add on Creatures XI if you want some higher level monsters and some DB mod to stop the assassin attacks.
If you really need a fix for #9 it could probably be made with a simple script that stops the player from looting whilst jumping, but IMO it's not worth having a dedicated script just for that when you could, you know... not do it.
Most of those can be fixed by a combination of Wakim's game improvements, Economy Adjuster and the optional magic tweaks in the Code Patch.
I would agree if it wasn't possible to run around with +900 for huge amounts of time. Maybe if it didn't stack or something, I don't know.
I don't know. If all you are really troubled about is the duration of effects from potions, you might consider using Dispell on yourself. That works for me in my game, but then I'm not using any of the mods that have been suggested.