I get what you're saying, but I also hesitate to really complain about that because like I said, how many other teams have starter-replacement players sitting on the bench? Very few teams go more than 7-8 deep even with 13 scholarships.
Then add in the fact that we had four four year starters - you aren't going to have players who are good enough to come in and make it not "known" you're missing one of your key players on both offense and defense.
In addition, it's also hard to really pin it based on the timing. If Haas' injury occurred in January when the team had time to make adjustments, that's a whole different ballgame. Even with Haas hurt, we had 3 four year starters plus Carsen Edwards.
It's easy to look back and play the "what if" game, but just like with the Baby Boilers - when you have such a dominant class that stays for four years - it's not easy filling in behind them. Good players want instant playing time.