It's an easily redeemable game. The daytime stages are amongst the best in the series, and the DLC is all solid. All together it's like 40 or so boost stages, ranging from decent to excellent.
The werehog combat needs some modifications
- no battle music except for minibosses.
- faster attack and movement speed, some basic cancels and dodges
- just less enemy health in general
The exploration and progression just needs:
- All medals come from fulfiling requirements in daytime stages. Nighttime medals are collectibles and unlock more concept art or some shit.
- Lower medal requirements in general.
Basically the point would be to have players spend more time in the Daytime and DLC levels, learning them well enough to fulfil Frontiers style objectives, and that the nighttime stages should be a brief palette cleanser between them. Get to like 80/20 Daytime/Nighttime instead of closer to 50/50 or 40/60.
I don't think it will become suddenly some sort of masterpiece with the changes, but I think it would compare a bit more favorably to generations perhaps.