A few thoughts:
1. Turnovers are a major, perhaps the major stat that determines wins and losses:
So, did the TO's in the Spring Game represent the "new" defense?
Well to look at this I looked at 2022 NCAA stats:
Fumbles Recovered Passes Intercepted
DONU 7 9
Syracuse 9 10
WFU 7 9
So, it does not look like the 3-3-5 played by SU and WFU cause a much larger number of TO's compared to DONU, as none of the 3 were among the nations leaders. Thus, cleaning up TO's will be a job for the fall and important to the win/loss record for the offense of DONU.
2ND point for the offense, one can't over emphasize how much last years OC put the OL in bad positions with his play calls. That is, he called plays asking for 4-7 seconds of pass protection which is what this OL does least well, not only that but opposing DC's KNEW he would do that and could scheme accordingly. Double whammy for our OL

.
When the OL did hold up, big plays to Trey Palmer, when not, injury to the QB, or 3 and out, putting tremendous strain on and average at best defense. A "good" OC would play complimentary football, i.e. drives that if they don't score, at least take time off the clock to rest the defense or flip the field so that the defense can play aggressively rather than with their backs against the wall near their own goal line. An aggressive defense can take more chances with coverages, blitzs and this leads to opportunities for TO'=enhanced winning opportunities .
3rd and final point is that scheme can assist the OL in looking good. Add a TE in blocking at point of attack, type of blocking scheme (zone vs man) and passing scheme with check downs, screens (other than WR such as Middle TE or RB) and more variety of receivers rather than just 1or 2 "great ones".
In summary, our HC caused at least two Losses last year, our OC two more. Well they are gone and again, with a "competent coaching staff" there is no reason why DONU should not have a .500 or better season in 2023.
GBR