I think I missed the part where ever was mentioned that CAP11 itself isn't allowed to sweep. A perfect mate combination such as Celetran or GyaraVira isn't centered around 1 poke, the other only being it's slave. Both are good pokemons in their own right, and both have defensive and offensive prowess.Yes, Steel STAB isn't gonna get people jumping for joy, but the concept is to help the OU pokemon sweep. WE ARE NOT BUILDING A SWEEPER. If this thing can sweep, we've failed in our concept, and made a pokemon that benifits from Togekiss, more than Togekiss benifits from it. Electric and Ground are both capable of Sweeping with their good stabs. Steels, less so. Lucario dosen't use Steel STAB, nor does Emploeon, nor does CM Jirachi, and Metagross just has absurd attack, a chance to raise it, immunity to Intimidate, and even then needs Agilty to really sweep.
And especially in a combination where there is a pokemon like Togekiss who has a myriad of supporting options, most notably it's rare ability to pass Nasty Plots, but also Wish, Encore, Heal Bell, etc, it seems foolish to make a CAP who only emphasizes on a small part of Togekiss' capabilities.
No, I feel that making this CAP a pokemon who can make use of Togekiss' support options or NP boosting, while in turn also cleaning the field for Togekiss to FlinchHax itself to victory is a far far more rewarding synergy, and makes us get far more from Togekiss' options than just saying that we should only focus on getting Togekiss to sweep when it's stats aren't amazing (speed remains an issue whatever way you spell it) and has issues with 4mss.