Here's my huge wishlist of unimplementable and stupidly hard to code suggestions!
Custom map rotations
They'd be able to create a rotation that can switch gametypes or skip to any map in any order. The rotations would be created either with a txt file, or within a wad. These rotations will be activated in the console either by naming a txt file or naming a lump in a wad. The default rotations would be automatically activated if none is specified.
"Community" system for netgames
Login using username and password
Server owners can create pages for their server that can be reached using
http://ms.srb2.org/ and can have a list of admins, server description, wad list (with download links if the wads exist on the MB,)
Map names
My next extremely crazy idea is to name maps without using MAPXX. When a new wad is added the map numbers would be temporarily changed to fit into empty map slots and then given a name specified by the map's name. The names would look something like this, unless the wad maker names the maps themself in a level header:
greenflowerzone1
limeforestzone
When a player adds mystic realm, for example, the game would move MAPA1 to the first open slot (map12.) The player then uses the command
map jadecoastzone1 and is brought to map12.
This system of naming maps is useful as it stop maps from overwriting each other (unless the user adds 1035 maps :P) and allows map names to be more easily remembered by players and server owners.
New console command: addfolder [name of folder]
Adds all wad files within a folder.
New console command: addgraphics
Adds only graphics/music/sound files from a wad, for example GraphicX8000v4.wad, without allowing files like textures, maps, etc from being added. Allows the player to join servers and unlock secrets after use.
New linedef executor: show zone name with next act
Without ending the level or starting a new one, displays the level's name +1 act as if you started a new one like in sonic 3 and knuckles. No climb = do not change act number.
Change the size of the deefault thokitem/spintiem so it isn't terribly off center and bigger than the actual spin sprites
Seriously. It's annoying
And now I'll post random suggestions by other users that were buried under other suggestions and are awesome.
http://mb.srb2.org/showpost.php?p=352253&postcount=8
http://mb.srb2.org/showpost.php?p=363970&postcount=18
http://mb.srb2.org/showpost.php?p=406351&postcount=68
http://mb.srb2.org/showpost.php?p=387112&postcount=41
Will edit with more bad ideas later.