I do not mind the changes to Shadow Flare, instant cast OGCD, no MP cost, it only lasts 15s from what we've seen in Mrhappy's video.
Overall from information we've gotten even if it's outdated from a older build, if summoner works the way I think it will work, we're dealing with alot less DoT management but more ruin weaving and buildup to bursts.
Being able to maintaint DoT's for 90s using only Tri-disaster? I'll take it.

Interesting thing I noticed in MrHappy's video, during the time we got Bahamut out, the Aetherflow gauge is not locked, makes me wonder if it's worth blowing through as many skills as possible instead of spreading them out like we'd do normally. Also Bahamut seems to use a shockwave when you use Aetherflow itself.