Yes, Eugene was probably our best defensive player last year...I've never seen a Scarlet Knight so adept at taking a charge like him, either.
I wouldn't assume we're going to become a sh1tty defensive team because he is gone. Sooner or later he was going to be gone due to graduation anyway.
I DOUBT WE WILL BE CRAPPY
We also thought the wheels were going to fall off when Corey left early but they didn't.
ONE PERSON SAID OVER AND OVER WE WOULD BE BETTER, FORGOT THAT POSTER'S NAME
My point is our players have a year more experience, a year more development. Our Freshmen are more experienced, too. Since you did point out Mathis earlier saying he "looks the part" let's see what he can bring. He was a good defender as a first-year player so maybe he continues to grow into a dominant enforcer.
I wouldn't count the Duke or Carter out, either.
Finally, I trust Coach. He's a defensive-minded guy. Unlike when Gene went down unexpectedly he's had time now to plan and scheme with his current roster in his absence - we'll just have to wait and see the results.
So yeah, Gene was impactful. So are a lot of players in the past. So are a lot of the players now.