Took the plunge (heh) and bought it. There were two there, one with a red soft satchel and one with a black molded plastic case. With my space concerns, I should have gotten the satchel but I went with the case instead. Feels so much nicer than my 17543, especially the baseplates and dust collection.
Haven't had a chance to try it out yet. I think my 17543 may stay in the table and the 28084 will become my handheld, and I may mount the regular fixed base in my table saw (21829 Craftsman). Haven't decided yet. I may do it differently.
This makes my third router, which is amazing considering I never saw myself needing more than the one when I bought it about a year ago. The Ryobi One+ laminate trimmer will just do the little stuff now.