That would be a dream for me. While the El Cap and Volante both allow a spring reverb so they can be used as reverb pedals too, I'd really love something that is like the El Cap delays + Flint reverb in one box, capable of running them in parallel or series. It would even fit perfectly into their current 6 knobs, two 3-way switches format if they cut out the El Cap mode switch or bury it under secondary settings.
I use the Source Audio Collider and it's a great delay/reverb box, but its tape delay just does not satisfy compared to the Strymons. The Binson Echorec models on the Nemesis would do it, but they're not available on the Collider and the Collider lacks all the Nemesis' editable parameters too.