I understand what you are saying, I am in the exact same spot
. I almost fee like querying 1 day responders just for the sake of getting an R.
Sounds like there's a demand out there for quick turnaround rejections. That is something I would be willing to do.
Rejections ARE Us Literary Agency. 24 hour response time guaranteed.
A sample rejection:
Thank you for your query. Your story sounds exciting and your characters appear to be both sympathetic and devious. Unfortunately, our staff is loaded up to their ears with work. Your novel is well suited for a much larger agency where time and money are not an issue. Should we ever expand our staff, please keep us in mine.