Potential improvement for Vaal Temples

I'm not sure how to fix Vaal Temples but one thing that came to mind is the following:

Being forced to leave the current area/map to do the temple when you complete the 6th seal (or whatever that is called) is quite inconvenient most of the time since the temple takes quite a long time to complete after a couple of runs.

How about if completing the vaal circles would simply yield rooms you can collect and then you can run the temple at your leisure sometime when you have at least 6 rooms collected?

That has the following advantages:

1. You don't have to interrupt the campaign or mapping.
2. You can collect more than 6 rooms if you like, so you got more to chose from, which makes juicing the temple a bit more comfortable.
3. You can chose between running the temple more than once in a row if you've got enough rooms (6 is the minimum to place to be able to run the temple again) or running it once with all new rooms placed.

Thoughts?