The crescendo events - events with continuous spawns near the end of some maps - are lackluster and unchallenging. Especially notable on Righteous Stand and The Hungering Dark, but also the War Camp and so on. These events should put more pressure on the players than they currently do with tougher spawns and spawn combinations emphasizing teamwork and quick decisionmaking. As it stands, they’re a minor footnote or victory lap in the maps where they aren’t as difficult compared to some spawn combinations it takes just getting there.
I think if you re-tooled spawn pools and options on these maps so getting to the end wasn’t as much as an ordeal and then made the final holdout something brutal it would far more interesting and exhilirating in order to overcome it. You need only look at the holdout for Horn of Magnus or Man the Ramparts from VT1 for comparison.