Paragons is the only fights you can "pad" dots on because they heal, so any DoTs on the non kill target is wasted damage. DoT damage is useful damage on other fights though because all targets need to die. And if your mages dot on Paragons, that's an issue with your mages, not with the class.
I hadn't seen this Tweet, and I'm rather happy about it.
I don't main a Mage but it's my preferred caster toon. For a long time before I played a Warlock, but I gravitated toward Arcane Mage in Cataclysm; it had its weaknesses and problems certainly, but I liked a lot of how it played and my damage potential on command.
But the dramatic expansion of the bombs has not been to my taste in the slightest, especially as Arcane where I felt like I was playing a "true" caster that concentrated on direct damage. I've played a Mage on and off through all of MoP, and overall still enjoyed it but I definitely won't miss feeling compelled to DoT everything in sight. I have a S.priest and Warlock for that.
Still wondering why I play this game.
I'm a Rogue and I also made a spreadsheet for the Order Hall that is updated for BfA.
This topic has been talked in detail in the 6.0 thread. In the end they think Mages should not be focused on DoT's and I for 1 agree with that. Sure it will take a bit of our gameplay away, but with all the talk about our rotations being too stale for Arcane and Fire.. Am sure they are doing something about it.
Anyways, Thread Closed. If you want to continue go to the 6.0 thread.