About Tier Buffs

Hi ! I think you should make the tier buffs lasts longer...around 10 days or so.because people are needed 9 days of full repus to complete tier 1,2,3 buffs,and if that player is active daily before he gets buffs again,the buffs that he has already will disapear.I just think that is too much work just for 4 days,even that the buffs are very good. So what do you think about make them lasts longer?