These minigames are great, they are all fun in their own ways, and ct have put lots of time into these gamemodes, so I find it a shame that we cant play them all year round.
ct mainly gave the following 2 reasons for why they aren't playable outside their respective festivals
"Queue would be dead"
Yes, it would be, but that's still better than not being able to play the festival at all, if I can gather some friends i feel like I should be able to play
"It wouldn't feel special during the actual festivals"
It would, the minigames seem to get some major update every festival (new characters, maps, abilities, ect) so it would feel fresh every time a festival starts and the gamemode gets an update,
also I wouldn't mind not getting rewards or scoreboard ratings off-season to incentivise players to play during festivals