You can always set up an additional hotbar, just for showing OGD skills CDs so it doesnt matter if you see them atm or not - i do that now too so i dont have to keep track of time or swich layers just to check.

Bloodweapon/-price would work just fine. Or you shorten the CD a bit, make it a shared timer. There plenty of solutions for all that, if you just want to. Id even take 2-3 more combos if we can condense the current ones on less skills, I just hope we dont get more SAM style stuff, it sucks when the mid move of the combo triggers buffs/debuffs >_>