This team heavily relies on its starters. If one person goes down to injury, the entire team starts to tank. That is why I think we need to have bench players that simulate the skill sets of our starters.
The most obvious example IMHO, is when John Wall went down. A.J. Price came in and started most of the games. However, for whatever reason, he never forced the tempo like Wall does. This was even more obvious after Price went out with an injury as well. Garrett Temple came in and we had a nice little uptick on offense. Even though he probably isn't that great of a PG, he emulated Wall's ability to push the tempo and it created an upgrade on offense.
Whom would you get as a backup PG? Well one option is staying in house and see how Saty does. I have always been a fan of someone along the lines of a Luke Ridenour.
This theory also holds true to many people other positions as well. Right now (esp since Cartier is hurt) we have NO shooters coming off the bench. Ariza is streaky but if we lose Bradley Beal or Martell Webster for long period's of time, we will be screwed as well. Team's will start packing the lane and life for Wall will be much more difficult to drive in. A stretch 4 would also help the roster a lot as well (may be someone cheap like Dorell Wright...I know he is having an off year but playing along side Wall could jump his numbers back). If we are serious about a playoff run, a good player, albeit flawed and may be a bit more expensive) player would be Kyle Korver. A cheaper alternative could be someone like a Marco Belinelli.
Whatever we get, I know for a fact our roster is incomplete. I like our starters a lot but if someone gets hurt, we will be royally screwed. This offseason we have to shore up our deeply flawed bench.