i'd say the main problem is the shaft and springs.
needing 4 of each while also having the cranks be from those floors really mucks up the ability to get them reliably at all

floor 1 and 2 can be like "i can roll on these two things" but then 3 and especially 4 is like everyone in the party is after only one item that may only drop one copy. It can get really tedious. Only really doing it for alt gear since it's basically the worst option for 350 statistically