Mega Boss spam runs are surely the way to go. You give up your reduced job pool for specific capes for a vastly increased cape drop rate, while gaining people that are more interested since you're not targeting only 4ish capes. There's the money aspect as well, as little as it may be anymore; Arise is still a good half mil on most servers AFAIK.

Doubt we'll see any changes in the short term to Incursion, but eventually things will need to be changed I think. Some capes are simply "better" pieces for the jobs, like Wars, it's just a better DD cape. But Smn? You get BPII -3 in a slot where none was available, while gaining many other important avatar stats. Geo gets a direct +20% up time to Entrust. Pld gets Phalanx +5. Rdm gets a large increase to buff duration. Pup gets Automaton TP+500. The effects are too specific and too powerful to be forever locked behind RNG and finding other interested individuals IMO, but they'll stay locked behind that for awhile longer no doubt.