u/Active_Radish_8301

At least in Ranked, you can still win if you manage to backdoor and destroy the enemy base. But in Tide Siege? It only takes one teammate to mess up to lose. Try luring the boss to the jungle creeps with that one teammate still constantly attacking the boss therefore resulting in the boss going to them instead of you. Holding the wave to farm? then a teammate proceeds to kill the wave you're holding even though the jungle creeps aren't killed yet.

IMO there should definitely be a minimum amount of Regular mode wins as a requirement to play the Endless mode. At least 5 will do.