Its ok for me, but then you even need to buff the other sets more (or the leg powers of items). Monks offensive power is very linear (except gen - a reason why gen is more effective the more you push). Bringing a WoL one level higher is a pretty hard thing. I play that build oh so long (I even did not switch when gen first came up and was clearly better) so I have massive experience there. There was a simple reason for that: gen is unplayable squishy.
I think your point is right, dont ask for too much, but even then: buff desert to 80% reduction would help all builds except uliana and generator. For gen it only can help if you have an item that gives you 100% uptime of epi since you have no cdr - and that would also make gen more mobile + no cc effect can affect him, and thats a key. We can ask for that and more buff all sets but then again LoN would fall behind, that maybe can get better if you introduce new pants for monk: as long as your epi runs your dmg is increased by xxx%. Pants is something you can not change if you play a set based build (or you lose some other key item) but helps on LoN. It needs to overcome the 20% elemental dmg + give an extra boost, so maybe 100-200% could be right.