Yes, the 10 dlvl limit is too small. It encourages nonstop offense of weak mob genocide, so it doesn't really teach players how to play when it comes to harder fights like NMs or dungeons.

I go into a lot of detail about this issue here:

http://forum.square-enix.com/ffxiv/t...-How-to-Fix-it


Powerleveling is also an issue that can be resolved with a fairly simple fix:

http://forum.square-enix.com/ffxiv/t...rty-SP-Formula