Previously (around 2 months or more ago) I made a script which creates a transition for coop maps with a level selector (instance) like Valve's, however it is fully customizable and you can browse between any map you like without having to create a custom VGUI (which is impossible without some kind of access to game code).
This was originally going to be for the coop-campaign for TC but was scrapped because developing for a single-player mod is definitely enough.

Imagine the possibilities
Any map-pack can be made and transitioned through just by adding in a different script. You could use the same hub map without recompiling and this could be the case for any coop mappack.
Only problem with this is: I haven't created a hub for it (at least not a nice looking one) and since I have no need for a custom coop hub, I haven't worked on it. So what I'm saying is: Do you think I should release this without a map to go with it?
(Or make a hub map for me. W/e takes your fancy)

In action: QJBuHX3UF4A

Would like to see what people will come up with

msleeper wrote:
A better question is: why shouldn't you release? Like what would be the drawback? I'm glad you put it up, I'm just not sure why you'd bother asking if you didn't want to release it in the first place.

This is so specific and complex I wouldn't think anyone would be bothered to make something which would require multiple courses (a coop mappack).
If someone were to use this for already existing different player's maps, they already have their own instances which would change the map, which would kind of make this script and my instances obsolete anyway...

Just sayin'