Current rotation for SCH per 2min 'loop' is 44 Broils and 4 Biolysis.
Rework Broil's potency to be 360p (it is currently 320p). Move Ruin2 into the Ruin>Broil levelling process.
Rework Biolysis potency to be 40p on cast, plus 35p for 30s (totalling 390p, it is currently 850p)
Re-add Miasma(lysis) as a replacement for Ruin2, with a potency of 300p on cast, plus 10p for 24s (totalling 380p). The on-cast potency even makes it stronger to spam than current Ruin2
Re-add Shadowflare, as a GCD, with a potency of 75p on cast, plus leaving a puddle centred on the target that deals 60p for 15s (totalling 375p).
Re-add Bane as an upgrade to Energy Drain, spreading Bio and Miasma without resetting their duration or penalising their damage. Because durations are not affected, it can spread Chain Stratagem as well
The 'optimal' rotation with the above, per 2min 'loop', would comprise of 8 Shadowflares, 5 Miasmalysis, 4 Biolysis, and 31 Broils.
With the above, the 'low skill floor' for dealing damage as a SCH is 'spam Broil for 48/48 possible GCDs in the 2min loop'. The 'high skill ceiling' is not just 'maintain all three DOTs', but also factoring in 'should I hold Miasmalysis for X GCDs for mobility purposes, because refreshing it 'on time' and then having to press it again and clipping the DOT, would 'cost' 60p because the 'on time' use could have been replaced with a Broil', etc. In terms of GCDs (not factoring in any OGCDs/raidbuffs, not factoring in using all your AF on EDs, etc) the difference in potency output between 'spam Broils' and 'perfectly manage all three DOTs' with the above numbers, on a dummy, would be just 340p per full 2min loop. Additionally, the potency per 2min of DT SCH is 17480, and the potency per 2min of the above, while doing nothing but spamming Broil and ignoring the DOTs entirely, is 17280. The absolutely LEAST 'optimal' gameplay for the above numbers (besides just not pressing damage buttons at all), would be 99-point-something% of the effectiveness of the MOST 'optimal' gameplay of Current-SCH. So these numbers would be able to, with even greater ease of play, clear every piece of content released thus far (even Ultimates and such)