Why maximum 100?

[Silex]

I know I can run this action in a cron every X hours, but in my use case I build a lot of images (300+) and one call to the cleanup action is not enough.

It's kinda annoying having to do another workflow that runs more often just because this action is limited to 100 deletions.

What's the rationale behind the limitation? Would you be ok to introduce some maximum option?