Originally Posted by
Blackmorgrim
Actually, beyond the small nerf from the mindspike glyph. The changes so far have actually been a single target pve buff. (If you're using FDCL for single target, you're doing it wrong FYI) The change to DP is huge for pve... around 3% DPS increase. Mainly because much more of DPs damage now scales with mastery. According to my spreadsheets, the spreading of DP's damage is almost a 72k damage gain over 6 seconds. It'll do on average 320k damage in 5.2... enough to probably kill someone in pve blues... and I'm only in mostly LFR gear. Add in haste/trinket cooldowns, and that damage jumps up to around 560k pretty easily.
I dunno, I honestly thought the response to your question was pretty straightforward. MS is a niche role, it doesn't belong in our rotation. The main reason FDCL procs MS is because its more economical to have it proc an existing spell and modify it with a buff, rather than create a special spell for the talent requiring a whole separate button on our bars.
If the question came out unclear because of the twitter character limitation. MS isn't a mobility spell like scorch. Normally its just the opposite. FDCL just makes it usable on the move and increases its damage. Otherwise, we'd almost never use it.