So, I've done 2 playthroughs on weak mode so far with restrictions:

-Weak Mode
-No Ultimate Equipment
-No Espers
-No Quickenings
-No Glitch Exploits/Cheats
-No LP Farming
-No Item Farming
-No Trial Mode
-Single classes only
-2x Minimum Speed

Team 1:
~6 Time Mages.

This is the theoretical worst possible LLG party you can have in TZA, so I decided to give it a go. Turns out this is one of the funnest runs I've done so far. This one definitely requires outside-the-box thinking; every environment you must adapt your strategy. Definitely worth a try if you are the tactician type.

Team 2:
Monk
Red Mage
Black Mage
Knight
Time Mage
Machinist

Good all around party with focus on offense. No major weaknesses except light in magic support and healing.