When ever I enter a server with playerlimit of 16, I get the feeling that it's too much. Maps seem to be fit for 4 vs 4 best and any more than that seems to make things way too messy. Like throwing 22 ice hockey players at the same time on the field.

Turrets for example are unable to react to such amount of incoming enemies. Some of the maps lean towards spawn camping when opponent team manages to push the players to the start.

Any thoughts? I personally like 4 vs 4 more anyway. (unless the maps were bigger of course then more could work)

That is very true. 8v8 is more for casual and fun play. I believe the actual competitive play will be either 4v4 or 5v5 (I think 5v5). So I'd agree that the map is better balanced for that team size.

There are several PC servers that are limited to 4v4 or 5v5. I hate when I accidently join em (as they are often still 16 slot servers, just that the rest spectate -_-), as I want 8v8.

Im sure they will eventually add more maps just have to wait a bit.

Yes I hope so. I just wanted to point out that community server hosts also have the power to screw up the gameplay a bit by allowing 16 people servers. This also ends up having a lot of bot servers and not enough people to fill up the spots.
4 vs 4 would be easier to keep filled and it also causes less load on the server. I just hope the hosts are wise enough to also put up some more nice 4 vs 4 servers.

Look for servers that say 'competition' instead of 'standard' - these are 5v5. As soon as the linux servers are released there will be plenty...