Many prestiges suck and need either tuning or rework

Normal Vorazun can’t “handle” the first wave on RtK, not on Brutal anyway. You either cheese it with your Dark Pylon (and hope you don’t get Vikings) or you make a Forge and put down 2-3 canons, if ally is doing nothing. You’ll also probably need to drop a blackhole to ensure canons kill off that first wave. Or you take 30 secs of damage and then drop SG.

If you’ve done just the 22/8 split on Chrono/SoA then Normal Vora and P3 Vora have the same issue anyway. The first wave hits by 2:30 so you can’t use SG that early. And then you’re taking 30 seconds of damage until SG.

For P3 Vora with the 5-min TS bug/nerf yeah that delays the expo way too much. If it’s a normal 4-min TS then use that one to clear your ally’s expo and the first shard. As I mentioned, if the 5-min TS is an intentional nerf and not a bug, it’s definitely a hard no for me: