To the Norse that's the reason. I have more problems with those infernal cheiroballistas.
This is now my major complaint though, the map screw. It is incredibly annoying when there are only 5 tcs on the map, and your opponent won't save. It also ruins potentially good advanced setup games, God knows it takes so long to get a good name as it is, the last thing I want to find is that I'm missing a tc.
The question of seige also comes up. Right now, the seige tower and seige ram have been nerfed a lot through the vil bonus. Meanwhile, whenever I use catapaults wisely, I have yet to find an opponent in rated who comes up with a good answer to them. Then there's the Atlantean seige, destroyers can be pesky, but are easy to kill with counter infantry, and I have yet to see a fire siphon employer for whatever reason. I think destroyers are okay at the momment personally, they can raze buildings fast enough if you're not careful.
Next comes the Heteroi, I have still yet to see this unit employed online, but maybe this has to do with the total lack of Greek players more than anything else.
The gps are just about right now, ancestors may need less time or something, or maybe one less minion. Valour should be restricted more, Carnivora should be improved on land, chaos units should retain stats. Maybe the citadel ought to be more powerful as well. Other than that, gps are perfect.
For myth units, I don't see a problem other than massed fg in dm, ES did great work here.
Now for the Norse, I think rc should have their training time reduced and their stats reduced as well. To compensate, tas and jarls should be boosted, while Hersirs should improve more after an age advance.
Greeks should be able to train heros from the temple, and I think their buildings could be a tad more sturdy. Maybe a very slight increase in wood chopping would be good as well.
Eggies are tricky, and I'm not going to tackle them since I play them.
Finally, for the Atlanteans, Turmas, cheiros, and katas should all be nerfed in different ways, while the arcus and the contarius should be boosted. This may not be necessary, however, with some tweaking done to their early game economy.
Everyone got AIDS and shit