Generative Fill Variations

Hello,

First post here, been doing alot of reading (and testing!) with the new beta version and generative fill and it raised some questions for me.

1) When running generation again, to get a new set of 3 variations, does it source the selection from the base layer again, or does it source the previous variations and generate from there? I've noticed it sometimes "rabbit holes" where the variations end up very similar as generations increase on the same layer (just clicking generate again), but going back to the same selection and starting over generates a better variety.

2) Are there any plans to increase/set the number of variations to run in one batch?

3) If not, are there any plans to run several batches in a row?

4) Any plans to run multiple prompts at once in the same batch? IE using wildcards for different colors of the same object, etc.

For 2 and 3, I find I run somewhere between 9-15 variations before finding a happy base to work from, and fine tune from there in small batches. It would be nice to run a larger "first" batch of variations and get a general idea of if my prompt/selection are adequate for what I want to do instead of generating over and over again.