So you’re missing the ‘Send’ mode offered in the two other reverbs… isn’t the unswitchable ‘Mix’ mode doing the same as the send mode anyway ? when used between 0-64 (instead of 0-127 in the other switchable reverb send modes)
if your content is naturally panned or has distinct content on either channel, it’ll be obvious the delay is actually panning, if left=right then the panning (which is happening) will just cancel out - what you want is a mono delay ping pong or a specific stereo delay mode that pans each channel tap the same side ! i see your point for mono material, whether that ‘X’ ui mode will be extended or not is anyone’s guess, can’t see it tho