There were two reasons to run LFR that were valid before delves. One, to see the expansion story play out. And two, for gearing purposes.
Combining LFR into Story Mode and turning it into Follower Raids takes care of the former. Delves take care of the latter. Over the course of the season I can even complete tier set bonuses and transmog via the catalyst. There’s no reason to wait for LFR wings, wait weeks for Story Mode to be unleashed, and also have Delves. You can condense it down into Follower Raids and Delves. And Follower Raids should be released right along with the rest of the raid difficulties.
It’d be objectively better to have a simple list that is sortable and filterable. As it works now half the time my changes to groupings don’t even save and I have to redo the work. Furthermore, having multiples of 4 in each group when the total characters is 65 (soon to be 70) means there will be groups that aren’t full. I do admit this is a minor quibble, though. I see a group, though, and I want it to be full.