After 2 months in: please, no.
I see this on OF a lot but it doesn't make much sense. First of all, most bosses are anti-monk in design. Example: with good timing and proper use of RoE you can maintain GL3 in o4s first phase during decisive battle - if Exdeath casts Bliz or Fire at the end. If he casts Thun and spawns not on top of you, you can't. now imagine you would loose 30% damage (or more, depends on GL4 buff) and it would take min. 10 GCDs to get it back. No, thank you. GL4 would actually not speed you up but forced you to +/- 25 seconds of superslow in many cases.
Another think is the constant complains about RoF slowing you down. If you time RoF with Brotherhood, which you should, you will get extra TFCs you have to weave in between GCDs. But you also have oGCDs you need to use. Meaning you need recast that allows 2 CD uses or else you would have to push back either CDs or TFC, resulting in dmg loss in the long run, since you are in RoF 2/9 of the encounter. What would be actually better is another oGCD to use or changes to chakra charging.
Removing slowdown from RoF would mean either potency nerfs to basic attacks or dmg up reduction from RoF. I don't see it as a way to go either. What makes our sweet sweet numbers right now is exactly the 30% dmg up. Just look at random logs - RoF with other players' buffs almost doubles our damage. And what would happen with TFC? Right now it's a brute in RoF and a meh otherwise. Without changing potency it would be always meh.
After changing RoF what would be left? A job, that's: 1) punished by 30% for dropping GL which sometimes happens no matter what, 2) punished by 30% for missing positionals which sometimes happens no matter what, 3) without burst phase to catch up if 1 and/or 2 happens. 4) the only one with mantra that's useless once everyone gathers a few ilvls on gear. Why would ANYONE take MNK instead of SAM then?
I've been playing monk for 3+ years now, raiding as monk since second coil. I did what Yoshi said (try it in savage and see) and it works good. There are ofc problems with the class but RoF nor GL4 ain't one. That we are dependant on RNG*RNG + party comp + party RNG: now that's something that doesn't make sense!!!