I've played few games lately and here is some feedbacks and problems that I found.
At first, I played the Pandyans. Very fun to play, but there is a problem with their 2nd UHV. Here is a screenshot (last svn version btw):
Otherwise, the UHV are balanced. Then I've played the Qin empire, I really like their gameplay, it is very intense. But there is also a problem with their 2nd UHV, Control the empire of Qin Shi Huangdi by 210 BC. The problem is that the game checks if the UHV is accomplished in 209 BC, or the Han spawns in 210 BC and you lose Wu, Qi and Han, so the UHV is count as failed even if you control China. Here are screenshots to illustrate
There is also two "fantom" tiles near Jincheng, I don't remember exactly where because I removed them with WB. The third UHV is a real challenge, even in viceroy reconquering China is difficult. The 1st UHV is, on the other hand, quite simple, just rush slaves for the Terracotta army (with the UP, the war against the others Chinese's cities and the barbs, slaves are not in stock shortage). Then, after building a quarry on Jincheng stone, the same for the Great Wall, or wait for the GE. Added to the production capacity of Xian, the goal is quite easy.
My last game was an Egyptian one, and I have any problem with them. Ptolemaic unit arts are beautiful, their gameplay is well balanced, and you can be the new Ramesses. However, their adjective is currently "Egyptians"; "Lagides" may be more appropriate. Also, the leader could be not just Ptolemy but Ptolemy Sôter, as Seleucos could be Seleucos Nicator.
I'm actually playing Goguryeo, if there are some civs you want feedbacks, I'm on holiday.