Daytime to Night?
Okay. I don't know if this is the worst suggestion anyone has ever decided to suggest for the srb2 game, as it is probably the most pointless, but I feel like saying it anyways.
Okay, so, in reality, I guess you could say that the time of day will always change right? It will be morning, to the afternoon to night and etc. Well, usually srb2 has it's Christmas theme that happens whenever it's December 25th (though call me crazy I think it should extend throughout the entire week.) and other stuff just like that. No real music change is required, and all sound tracks can be kept the same... but what if srb2 changed in their stages depending on the time of day you decide to play it? Like for instance, if you play it during the morning, it will be all sunny like the regular stages currently are (for the stages that are enclosed, there won't really be a difference). If you play it kind of late in the afternoon, there will be an orangish tint and it will feel all "sunset" like. And if you play it at night, the game will get all dark and midnight like (with the exception of stages like Egg Rock Zone, Techno Hill Zone Acts 2-3, and Red Volcano Zone.)
What purpose does this have on gameplay? I think the only purpose this would serve in gameplay would be the fact that it gives you the feeling that you're actually playing the game in time with your time, so you can actually get a feel of the stage. Basically, it serves absolutely no purpose.
So then why do I want that (and for some reason other people as well)? Honestly, I wish that I could give you a solid reason as to why I would want something like this. If I remember correctly, and old mod for srb2 1094 did something just like this, and I honestly thought it was cool.
... with that said, I'm sure this will also spawn that people want seasons added onto this game too. I just think that for a visual factor, I guess that would make the whole game of srb2 cooler, but I'm sure those working on it still trying to make the levels and stuff like that will find this to be a silly and pointless add on to the srb2 coding.