I absolutely disagree against removing this map or any major revamps.
I never notice the lighting on maps because I use a full bright resource pack, and the nighttime looks simply amazing which is why I always vote it in skywars. If the lighting is really this much of an issue, you can always do the same.
Yes, I do agree that the map is a bit cramped, but I don’t really want it changed. I would much rather have the respawn point changed to maybe the other side of the ship and open up a door to the iron gens from that side as well just so getting punched off by respawn by players is a bit lower.
I haven’t seen too many people camp the planet diamond gens. When I do see it happen, it is usually a under geared player who is quite easy to deal with. The much higher likely hood is that people will camp their bases, which happens on basically every map which doesn’t really make it a valid reason to remove this map.
I have friends who absolutely love this map and I quite enjoy playing it. If you move fast, you won’t run into any of the problems you mentioned.
This map also is constantly being filled up meaning that this is a pretty popular map.
Everything you just said... Was wrong!
You can’t really say that someone’s map preference is wrong as it is a personal opinion :P