I think SE already hinted at a possible new haste spell but I doubt RDM but be the only job that got it so it wouldn't really change much for the job. I would also like to know what roll RDM is supposed to play since SE seemed to like calling it a party buffer when 90% of it's buffs are selfcast only and the party buffs it does have WHM has the same or better versions of. As you said, nobody really debuffs anymore except for maybe dia spam but any mage can do that.

RDM was never a good healer, only reason it was first choice in merit parties was because of convert + refresh. SCH pisses all over RDM in every department right now bar enfeebling which nobody cares about anyway.

In short, SE themselves can't decide what role RDM is supposed to fit into because it sure doesn't fit into their job vision they posted a while back.