First off, HOLY RUN ON SENTENCE BATMAN. Secondly, why don't you test it and see? We aren't here to do your work.
I was thinking the other day about the usefulness of improved blood tap now that we can safely say that DW is no longer going to be viable, and we won't be needing the blood tap cooldown to activate dark transformation as frequently, Runic corruption being buffed into what will most likely end up being a near constant buff on ourselves, and with Scourge Strike only costing 1 unholy rune, could it be a DPS increase to make a macro that includes blood tap as part of our scourge strike cast? something along the lines of :