Lobby not checking mod versions

**I experienced...** Modded games desyncing immediately at launch due to 1 or more players having the wrong version of a mod.

**how to reproduce** Play any game with more than 1 person and with at least 1 player with incorrect mod version.

**I expected...** Lobby should auto-eject anyone with the incorrect version just as if they didn't have the mod at all.

**Where the bug is / What should be done** Some sort of version check upon joining? Or a script than can simulate the launch and check for immediate desync's (if that's even possible)?