This is incorrect. Standard Finish affects one other player for the entirety of an encounter. Technical Finish affects your entire party—so 3 people in 4-mans and 7 people in 8-mans. Both buffs give +5% for the correct number of steps, so this raid damage gain needs to be factored into DNC’s overall damage. Balancing utility jobs is not solely done around their personal DPS but also their raid DPS.
We do not know what DNC’s damage is currently. The only numbers that have been circulating are simulations and some SSS numbers from Titania EX’s striking dummy. I explained above why the latter is not an accurate representation of the overall damage a support/utility job does.
Theorycrafters are currently trying to figure all of this stuff out. We’ll probably have rough estimates up until the release of Eden Savage, and then we’ll start getting more solid numbers from the groups that run it and do all the number crunching. Until then, all you really have to go on is feelycrafting—and that’s not adequate.
HW MCH was actually better than BRD on release. It was heavily favored in physical DPS comps thanks to Hypercharge, while BRD was favored in comps that had casters thanks to Foe Requiem. The inevitable buff wars that ensued in attempts to balance the two jobs against one another broke the jobs to the point where they were dealing the highest personal damage of ALL DPS jobs.
SB MCH was still meta when one was going for parse runs. However, players didn’t play it
NOT due to its lack of or want for utility. They didn’t play it due to terrible design and terrible gameplay. Go to any Stormblood MCH thread on here or on Reddit, and you’ll see the same theme in all of them: the job was horrendous to play—clunky at higher latencies and skill speeds; players that didn’t have the best ping in the world were punished due to the nature of their Wildfire window and oGCDs like Rapid Fire.
If DNC and NIN have decent raid contributions, they will be fine. NIN was one of the lowest in personal damage in SB—but it completely annihilated in raid contribution with Trick Attack alone. 1,000 rDPS in a single skill—I think the only other single raid buff that could compete with that was Balance, and only with RNG being heavily on the side of the AST and allowing for enough AOE Balances to meet that number. Add that to their personal damage, and that’s the overall rDPS they were doing. Low damage or not on their own, they were—and have always been—highly valued in groups that seek to optimize because of what they bring.
What sort of data do you have backing this up? Do you have repeated logs of testing? Have you done extensive testing? Are you testing decent NINs, or are you just looking at NINs that are average at best and bad at worse? What does your evidence look like to back this up? Do you have any at all?
It will depend. DNC could be fine even with the RNG aspect. After all, SB BRD was heavily RNG based for bursts, but they never wanted for their spot in the meta.