There's just two things from BGII that I would like to see in BG:
The ability to highlight containers, and not having the inventory screen unpause the game.
Can anybody point me to mods which will make these changes in BG?
There's only one way to have the ability to highlight interactive objects and have the game stay paused in the inventory, and that's to play the game in the BG2 engine via one of the two available mods that do this: BGT
Both convert BG1 into the BG2 engine. The difference between the two is that BGT's purpose is to seamlessly take the game, your character, and all relevant NPCs, all the way from Candlekeep in BG1, through Shadows of Amn, and to the Throne of Bhaal. All characters keep their status and XP right from the start, including NPCs, so no need for importing.
EasyTuTu is different, in that it is ONLY BG1 in the BG2 engine, but it does have the advantage of being completely separate from BG2, so you can play the original BG2 if you wish -- with BGT you can't do this. However, TuTu has more bugs and a few graphical issues that BGT does not.
If you want a seamless trilogy all the way through, go for BGT. If you want a standalone installation, go for TuTu.
NB: To get the weapon proficiencies as per BG1 (well, a variation of that system), you will need the tweak pack