After a few long house of thought on the toilet.. I've come to a solution to fix problem of servers hitting tame limit and to help reduce the stress on the server caused by bases with 400+ creatures just sitting around.
Add lifespans to creatures. By having older creatures die of "old age" you can remove at least 1/2 the tames that have been sitting around for months in a base. Forcing players to breed or tame new creatures. And keeping someone from storing creatures in a base just to log in to feed them. Realistically a tribe in the wild trying to survive wont keep 350 creatures alive when They could use those resources on other things.
I'm not talking about a 2 month rex, something more like 6 months? While the max age of dinosaurs is still under investigation that cant keep Devs from making an educated guess on the lifespan of a compy or raptor.
Personally I've stopped playing ARK due to the inability to do anything do to space and tame limit filling up fast.