Get to planet kebabulon as fast as possible. Like any% or NMG but you dont have to do the sun bossfight
(Totally not beacouse i cant do the sun bossfight)
Ok real reason Robot64 is meant to be a platformer and the Sun bossfight is kinda anticlimactic since its a shooter, a variation of his may be platformer% (yes 2 ideas in 1) where instead of the sun bossfight you need to do all the Kebabulon ICs idk
i believe there used to be/is a category named "no sun" which is doing the exact thing you described in the beginning post, so this idea isn't very original unfortunately
the second idea you described doesn't seem to be very interesting either
there isnt a lot of visible evidence that "no sun" even existed, so ill give you the benefit of the doubt on that
no sun is one of those things where its so obvious but unpopular that it never gets added
