Custom rest between sets

It seems to me that it would be good to have a custom rest time in each exercise settings because for a bench I might want 90 seconds rest between sets but for an ab exercise I might only want 30 seconds.

I agree. I’d also love per exercise to be able to set max rest time. I like that the warm up and lower weight sets have shorter times. When you turn off automatch rest it stops the shorter time for those sets. The max rest time would give me the option to rest for 1:30 but still have a ~30 seconds break between warm ups and lighter weight set.