LV's initial damage is so poor because they don't have a system that would add a damage constant on top of an otherwise final value. Now they have to start from very low or otherwise it ramps up to unnaturally high numbers. The current LV damage ramp up style is not very satisfying (the initial low dmg numbers), and they should have noticed and solved this problem early in the design.
The AI is somewhat understandable. Darth Vader uses AOE before MM so that he could not be slotted in an SLKR team (at the time) for too much profit. Maul plays like a fool to give a view of a lax opponent. This is nothing new, the issue lies with the overall power level of LV.
A little bit more could be said about the dysfunctional nature of the team. For example, if LV was the only tank (like JML), and Royal Guard hid himself the team's act would look a lot more coherent. Maybe we are still missing a piece of the puzzle because this cannot be the final product, can it?