Vaal Temple league mechanic feedback

I think the main Temple is a good concept but I'm a bit unsure of it's benefits.

Early in the Campaign it can be a big damage boost as you don't have access to much currency, so the Regal and Exalted altars can be a nice boost.

By mid-Campaign though it's a small chance of good loot and mostly just an XP source.

We're clearing a room to get access to a Regal altar? I've also cleared entire temples and had no Exalted altars.

The gold in the Vaults doesn't scale with level, so early on it's good but by mid-campaign it's not worth the time.

I'm not in maps yet but I've heard the mechanic of building the vault can be punishing. No one knows what they're doing really, yet, and it's easy to mess up the pattern and end up nowhere near the Architect or Atziri. And there's no 'undo' or 'redo', or even any spare parts. Needlessly punishing.

So I'll skip the mechanic for now, which isn't great 2 days into the league, but hopefully someone's streamer community will discover how to make good use of it.