Try Tatar or Horn bow. On masterwork, 2 hits for light armored, 3-5 for medium or heavy armored while using Arrows +3 with an 18/18 build. Very short reload time, this are actually ordinary bows. If you want more damage, accept that you have more arrows and a 0-slot melee weapon or less arrows and a 1-slot melee weapon. If you do not accept this, you should play as a crossbowman.
I do not see why you are complaining.
Btw, no expirience with the Yumi so far. The stats do not look bad tbh. Just test it as well
And please, do not limit the number of quivers archers may bring. Why should they not be allowed to bring as much arrows as they want? Adal and me often use a 1 slot bow to bring 3 quivers of bodkins, tatars or barbed arrows. Why do you think about restricting this?