Honestly, Shining Stars is a pretty alright hack. I think at its time, it's pretty good, but for me, it doesn't hold up as much. The choice of music has its highs and lows, with some tracks being translated pretty well to the SM64 soundfont, then other tracks are painful to listen to. I like the atmosphere and level theming for most levels, but most levels have issues with either being huge and empty or small and crammed. I personally don't like having to traverse through huge terrain, I don't believe SM64's base movement makes that fun in comparison to other 3D Mario games. The difficulty is pretty chill, a nice difficulty to either take your time with and soak everything in or speed through each level if you're like that (me).
I don't like how simplistic the rating system is, so I'll give my own accurate rating for romhacks from here on out.
I give it a 3.8/5. Great for its time, doesn't really hold up in the present.