It’s a camp-fest, but not in the direction you think.
The Varelsi spawns grant immense experience and can be rebuilt instantly. Teams who bring free gear (shard gens and wrenches) and then camp the Varelsi points are able to endlessly grind Varelsi, accumulate masks, and gain a huge level advantage. This is especially true because the large shards are placed near the Varelsi, not near the depot, and there’s absolutely no passive xp gain at the depot. There’s also no benefit to handing in masks incrementally - it’s better, time-wise, to drop in all you need in a single trip.
To put this into perspective: when I play with my team, we almost always have our ults before the first boss (five minute mark), and we’re very often level ten by the second boss (ten minute mark.) When we finally swarm the depot, dump in our masks, and win the game, many of the enemy team are sitting at level 4. The members of our team only deposit once, and it’s usually with 200+ masks, and we routinely go straight from 0 to 500 in a single hit of the depot.
As Gali, I’ve earned eight triple kills, one quad, and immeasurable doubles since this game mode came out. In one game, I racked up 20 kills simply by holding the depot endgame against a team that, before we rolled in, had been camping it religiously. That’s how effective it is to be over-leveled when it finally comes time to claim the depot. I’m just about fed up with the stomps, though, and you really need three-four people coordinated to pull this off effectively.
Maybe giving xp for mask turn-ins would be a small, cute way to discourage mask hoarding, but really, I think the mode by design is always going to be imbalanced this way. My best hope is just that other people adopt our strategy so we get some actual opposition in the middle