Thank you for your reply!
I plan to post it as maps+current Overhaul content as 1 mod/ 1 main file. Old version of Ovehaul would be separate version either as separate mod or separate main file. Later I plan to post maps mod separately, but it won't be supported mod (since balance is made for current Overhaul mod and I want to post it separately only just in case someone wants to play just maps). Also maps mod will affect files, which already exist in Overhaul, so I can't post maps only and current files separately as 2 main files (aka they can't be combined without proper integration in 1 mod).
Very different means they would be played very differently and have different balance/gameplay. Current Ovehaul mod is made for vanilla maps. Maps mod+current Overhaul will have some changes to balance, would have way more enemies, changes to pick ups, shortcuts, accessiblity of upgrades, changes to platformng etc. It will also include new enemy and enemy variations from other mod author assets (I have permission and this mod assests are free to use).
Yeah, I was concerned regarding mod splitting. I just don't understand, when it's fine to post collection of mods or split mods. All current mods, which included in Overhaul were originally created as separate mods. But with maps mod or with my desire to post changes from 1 mod for 2 weapons as separate mods I just don't know, is it fair thing according to rules or I break something.
I looked at it and as said, I'm not sure with part regarding mod splitting.