This strategy is only marginally useful, but it’s pretty interesting and somewhat comedic so I’ll share.
In a scenario where you’ve just landed a far hk with your opponent in the corner, obviously the best solution involves a Fragrance Palm, then an optional lp/mp snake strike to Ultra… but if you don’t have ultra, and feel like gambling, there’s an alternative. Following up that far hk with a close hp canceled into a LK Messiah (the initial hit of which will miss) is a reset of sorts, presenting you with a situation that’s exactly like a Messiah kick on block. An immediate lk will hit an attempted throw or poke, a slightly delayed one will trade with a shoryuken/etc, mk/hk mixups lf-explanatory.
It’s a pretty weird setup and it’s unlikely that you could get it or even want to use it very often but if you notice a pattern in the reaction of your opponent you can probably gamble your followup successfully, even potentially waiting enough to throw if your opponent is super skittish (that would be the most damaging option at 360 total damage versus 286 for far hk, fragrance palm, 3 hits of mp snake strike, the meterless sure thing).
Another possible value for this mixup is that the stun for far hk, close hp xx LK messiah whiff, HK followup hit is 104 more points of stun over the meterless option (396 vs 500) as well as 24 more damage (plus a knockdown, and The Fear of Mixup is instilled in your opponent).
If, for some reason, your opponent has the “interesting” habit of neutral jumping a lot and happens to choose that option against this mixup, the LK acts as an anti-air, which can be followed up with 3 hits of MP snake strike, bringing the total damage/stun of the mixup to 390 damage, 570 stun.
All in all, there’s quite a few things to work with here. However, I probably would not recommend doing this sort of thing against anyone with an ultra, and only with great caution against characters with DPs.