My thinking was similar to OP's. I have a good delay/reverb pedal and a couple of Elektron boxes (A4, Digitakt) that, in addition to supplying percussion and sequencing, can take stereo input (or dual mono) and apply effects and panning. The one in-rack effect I have is Sarajewo, because the BBD sound is hard to approximate, and it offers the possibility of customizing the feedback loop. Using the T1 and T2 taps also gives a reverb-like effect. I'm keeping an eye on granular options but no purchases so far.