Sending the FX back to itself eliminates the ability to have a single slapback repeat, so that’s a no go.
My basic use case is dub reggae. I have a pair of soft knobs on my SQ6 assigned to regen and delay time. With a very short delay, I need 95%-99% regen to get a nice lengthy “sproing” off a snare hit. Whatever the max regen on the stereo delay is, it isn’t enough. 100%+ would be even better, by a lot. Grab a vocal phrase, get it infinitely circulating, ride the regen, alter the time, and wonderful things happen.
As I understand it, your echoplex sim can do full regen, but of course it doesn’t have tap tempo, which I absolutely need. Over the course of a lyric, I might want 1/4 notes, or a triplet across a full bar, or whatever. The delay time is set by musical feel. It’s an instrument.
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