You can call it what you want, but it invites confusion and is unnecessarily vague, and in this particular case due to common X/Street Fighter linkage it's actually misleading. There are a considerable number of players who believe Shun Goku Satsu to actually be an attack name for Omega. If your adjective is in and of itself actually a proper noun, why not use the correct proper noun?
For the same reason I think it's just fine to call any of Zero's "rising slashes" what they really are, in the end. SRKs. To that end, if one of them pops in this game, they'll be just considered SRKs, by association of what the move properties have in common with a base-line thing that most people can identify with. The proper attack names are really only for the sticklers/geeks who really care about such things (re: like you and me, on that respective level reserved for it
).
But, if you REALLY want to avoid confusion? Again, keeping it simple, for the sake of this PARTICULAR arena. Most people are probably willing to indulge the notion of associating the Ranbu with a "Shun Goku Satsu" type of attack, more than any thing else (assuming it gets in). So, for the sake of KISS, I say humor that indulgence. If they really want to learn that much more (like say, what it's proper name is), they have the opportunity to do so on other topics on this very web site, alone.
To further illustrate my point, let's flip and reverse it, for the other side of the fence, in the Tatsunoko camp.
If I or some one like Taiyouh really wanted to, we could probably display how versed we each are in the Tatsunoko area, as well. For example, we both know that both Tekkamen have super laser attacks called: "VOL TEKKA". Now, should we be so presumptuous, that we could roll off "VOL TEKKA", and expect people to know exactly what we speak of? I'm willing to bet the case would STILL be "No", even after a whole year's of time since this game first appeared on the scene.
However, for the sake of keeping it simple, it would probably be more "on point" to either a) describe the attack by the motions used (like say: QCF + 2 attacks), or b) describe it as the "Tekkaman version of the Shinkuu Hadouken" (or "Make it Rain", for Tekkaman's SRK+ Attacks).
Again, KISS method at work. If they really wanted to know more in the way of what boils down to trivia relating to the subject matter, I'm sure I, Taiyouh, or some body else would be willing to enlighten them. But, at the same time, it ain't necessary for what boils down to a Fighting Game, specifically.
^THAT is what I was planning to do. Keep it simple, for the sake of making sure that we have even ground for BOTH sides of the playing field, with respect to the specific, FG matter at hand.
But hey, tell me how ya want it, Shelly! If you want to keep it on the level you're most comfortable with, then fine. But you open the playing field for exactly what was I referring earlier. That will probably do more to contribute to "confusion" much more so than what I proposing...