Here's a list of 37 playable leaders, with some of the best and some of the worst culled:
With the max of 33 players, that leaves another 4 to be culled. That could be 2x FIN, 1x EXP and 1 of the bottom leaders. We can then do a rough ranking of leaders and civilizations and match them up. Won't be completely balanced, won't be awful either. Maybe some weak leaders for India and Inca should be left in, possibly also for Sumeria and Egypt.
I'm fine with either mod or no mod, but this could work reasonably okay.
I'm fine with either mod or no mod, but this could work reasonably okay.