Fastest and most engaging class

[dday3six]

I'd look into MNK as well. Most of the GCDs have positionals, so there's a lot of movement involved, and it's got a solid suite of oGCDs to rotate through.

I NIN mained it for long time after realease, and while it might be what you're looking for mechanically. I find that while the moves of NIN are very aesthetically appealing. When weaving, imo, they tend to not flow as well as say SAM, MNK, or BRD's animations do.

[ThirdChild_ZKI]

Skill Speed always was, and continues to be a terrible stat for MCH.

[Kwoon]

Skill Speed in general has always been a pretty poor stat. Typically, once we get all the mathcrafting out of the way, it tends to be -hit EXACTLY x or y and forget it- which is usually more about fitting buffs/dots around a rotation or something like fitting another RA proc chance for Bard. That said OP, if you're looking for engaging your best bet is going to be relying on procs or positionals.

Monk- Lots of positionals, so fairly high movement to keep you active and engaged.
Bard- TONS OF PROCS! Especially if you stack that crit, which you should be doing anyway. The Opener has you wishing macros didn't suck because there are too many buttons to push and continues to keep you busy as the fight goes on since the majority of the time, you're upkeeping your crit buff, your dots and managing crit procs in the form of RA, Rep, and Bloodletter.
Dragoon- Haven't played mine in SB, but if its similar to how it was, there's enough positionals to keep you engaged and two of them are randomish (in the form of which one you get.)

Personally, I play Bard and find it very engaging. Doesn't hurt that you have a lot of support to offer and can tailor your rotation to fit the needs of the party for that particular fight (such as holding onto Foe's+Refresh for a little bit to line up with healer MP needs.) My crit is in the 2100-2200 range before food/buffs come into play so the crits on DoTs happen often, keeping me busy. Its also very fun in dungeons when you can use an enmity cutter and steal rip aggro from a tank due to how much damage you're putting out thanks to procs.

[ZhaneX]

Dragoon- Haven't played mine in SB, but if its similar to how it was, there's enough positionals to keep you engaged and two of them are randomish (in the form of which one you get.)

They removed the randomness, tying each of the positionals to one of the combos, and also making it so that now you follow one up with the other.

Anyway, I'll echo what others have said about Bard.
Machinist is misery itself by comparison.

[Kwoon]

That's a little disappointing... I know they had a lot ripped off already so losing the randomness is a tad overkill. I guess they got that support thing going still though.. so there's that.

[enthauptet]

I have only leveled up 4 jobs to 70 so far but for speed and stuff to do, I would put them from most to least as Bard, Samurai, Monk, Black Mage. Monk has the fastest regular GCD, but Riddle of Fire and lack of oGCDs make it not really very interactive anymore with the removal of their second dot. Bard and Samurai both have lots of oGCDs, Bard has a lot of procs (based on song used) where Sam doesn't (based on resource buildup). BLM is a typical caster and not very fast so you wouldn't like it.

[Vshunyi]

NIN for the fastest in terms of how fast you need to press all these buttons. It's also engaging in that you have Shadewalker, Smoke Screen, and Trick Attack to help out the party so you have to know when it's the right time to use it, as opposed to something like SAM where all you have to worry about is your own positionals and oGCDs.

[Raiden_Ki]

I've tried the suggested classes on savage.

MNK has been slowed down with riddle of fire. I liked the positioning but it does get old fast. It feels its lacking something "extra" to do besides the same 1-2-3 combos and oGCD.

DRG did feel very fast at moments when their oGCDs are coming off cooldown, lots of weaving. But outside these windows you really feel the slow basic skill speed.

NIN has the skill speed buff making sure you are using your combos faster. It has nice spender abilities with 2 oGCDs. A mudra system that kept it fresh for me, although in the end its mostly suiton every 60s and for the rest using shuriken.

I haven't summarized self-buffs and raid-buffs for the rest. I do believe that NIN has a nice combination of speed and being engaging enough to hold interest for the player.

Also I tried BLM and strangely enough this class felt quite fast and engaging. Stance dancing while maintaining the buff and procs felt really good.

Thoughts?