Re tos improvements

Why is there a need for a timer for when the round ends. Let’s revamp it with no timer and have random lengths of rounds between say 20 mins and 50 mins. That why players can have no idea why to send multiple waves.
There could be two rewards per a node per a round. One for holding it the longest and the other for end of round reward.
I would use tokens as rewards and so many tokens can purchase a crate as in now with tier 5 crates more expensive than tier 1 ones.
This way it should spread the waves and stop the end of round lag since players have no idea when the round will end because there is no countdown timer.
The amount of rounds could vary each event so some weeks it might be say 50 others it might be 30 that way there is no prediction of when rounds will end.