Been getting into SM64 hacks for the last year or so, beat a few of em now, lemme give my thoughts.
Star Road: Good and mostly fun, but gets bullshit hard sometimes to where I saw no option but save-stating, something I personally think is a design failure for a ROMhack.
Last Impact: Kind of really bad to be honest, more interested in showing off jank ASM achievements than giving a fun game, didn't even finish this one, got like 2 worlds in.
Ztar Attack Rebooted: Really good, close to exactly what I want out of an SM64 romhack, though the level design is a bit closed-quarters for the SM64 camera.
Star Revenge 6.25: Good, but the levels are all way too big, takes forever to repeat a star because most of your time is spent getting back to the star itself after dying.
The Green Stars: Dated, to say the least, I played a few worlds in but it's really hard to get into nowadays.
SM64 Sapphire: The best one I've played yet, it may be short but that just means it doesn't drag on like a lot of these ROMhacks end up doing in a quest to have the most stars that take the most effort to achieve.
B3313: I never got the whole 'SM64 is creepy' thing, so a lot of this hack was lost on me, I honestly just thought it was visually interesting and fun to explore and wish it had an alt. release where it actually tracked your stars properly and didn't put 90% of 'em as castle secret stars.
That's all the ones I'm done with, but right now I'm in the middle of playing Super Luigi 64: The Flower Cup. I have been pleasantly surprised by this hack, I'm 106 stars in of 161 total. Sometimes the stars randomly have a stupidly big difficulty spike but it's overall a moderately challenging substantial experience. However, some stars that ARE particularly difficult are made so because they're just too long, I found myself saying A LOT 'if this were base game the star would be over by now'.
Anyway, all that aside, I'm wondering if I can get some recommendations based on my views, thanks!
