As long as the lobby alays updates version n# at the same time as spring then there's no reason it cant be done, infact Fnordia did it when SJ was in charge.
The current realease of the lobby seems ot have a bug when *hosting* replays, that the green componeent of the player's colour isn't found - so everyone looks like they were playing in shades of pink and purple. It's correct in-game tho...