Uptiers and downtiers

Uptiers are something we all experience in this game, but in my opinion gaijin should rework it a little bit.
A full uptier now is 1 full br higher then u but i think we could change it so uptiers or downtiers for that matter are only going up to 2 brs higher then u. For example if I play my mirage 2000 i can be downtierd to 11,7 and uptierd to 13,0 not 11,3 and 13,3 like it is now. the difference in weapon kit and flight performance is to much.