See what you write here is a perfect example of something to note. There are multiple builds for BiS MNK in SB. On the Balance job guide by Tiffany Liz, there are builds with higher SkS, and builds with lower SkS but higher damage. This is a personal preference thing. I have tried MNK with a skill speed north of 2300 and it's still too slow for me, but then again, I come from fighting games like MvC2 and Guilty Gear so my brain is hard-wired for super fast button inputs, complex combos and counting frames in animations. That's not for everybody, though, so I respect you wanting to make things easier for you by slowing it down. A lot of that is going to be dependent on how you have your controls set up (mouse and keyboard, and is keybind/raid mouse button dependent, vs. controller with WXHB, so on and so forth) and how comfortable it is to use in your hands.
But the important thing is, we had OPTIONS. I could play how I wanted, and you could play how you wanted. We could use different builds and melds to cater to that and we'd be fine. We could both do the same opener, but handle things in ways that were uniquely comfortable for how we like to play. Now, we don't really have any options. Those were taken away from us. So for all they were saying about trying to break the meta and allowing for more play styles, it seems we were instead forced into one that isn't fun for anyone.
SSS and TK CAN be used together... it's just that without more oGCDs to use, making sure that the ones you've got are off cooldown so you can pull that off is going to be a rare thing to line up unless you're willing to sacrifice overall DPS output by saving your oGCDs for that window. And even then, the recovery is oppressively slow, even if you try to cheese it with using the unreliable method of Anatman + server ticks for a GL stack. We NEED more oGCDs, two to be specific. That should be mandatory, no fewer than two, regardless of what changes they make. At least one of them should give a GL stack.
If they remove Anatman to make this happen, I'm fine with that. If they change Anatman to allow it to be used out of combat to charge GL stacks, I'd still say we need an oGCD for a mid-combo recovery or else TK is pointless to use at any point in the rotation instead of SSS at 4 GL stacks and biting the bullet with an oGCD. I'd STILL say that even in that case, we still need two more oGCDs. If Anatman stays, the only way for it to really be viable is if it charged faster and also charged Chakra, so it could be used for pre-pull setup. Otherwise it would take too long to charge that, AND have all 5 chakras stacked, AND form shift 3 times.