Correct, it wasn't just Hardman, but we saw first-hand why his metrics from @kreed5120's site were so unfavorable.
Nate wouldn't have required a double team. He wasn't overly athletic, quick, or threatening from deep. Okonkwo maybe down low but I think that's a stretch, too, considering he only averaged 2.9 ppg as a fully developed 5th or 6th year "senior" at Utah.
Young will be missed for his energy, not his height, and we're seeing the future for Akron guards - taller. Tavari and Young got completely covered up by longer TTU players. We have now gone from 2 sub-6ft guards to 6'1" being our shortest (expected) key ball handler (Perkins at 6ft-even would technically be shorter but I'm not expecting a redshirt freshman to be relied on heavily, especially with Tahj/Wilson/Head on the roster).
Eric is good and has a ridiculously high ceiling but he isn't the answer at this stage in his career. His game is still raw and his decision making is questionable at times. Not so sure Ty Pence will be much of a downgrade, if any at all. Athletically I'm sure there will be a little bit of a difference, but experience/decision making/etc. should all be upgraded with Pence given his experience. White is also a similar type player but with more physicality.