So, in my view, there are four groups of people who are interested in this keyset:
1. Those who want traditional sculpted, i.e. 3-1-2-3-4-3 row profiles, and won't buy if otherwise;
2. Those who want a modified sculpted, to match the row 3 Shifts, with uniform alphas, i.e. 1-2-3-3-3-4, and won't buy otherwise;
3. Those who want uniform row 3 throughout the set;
and
4. Those who just like SA-profile, like the colorway, and don't care about the specifics.
Myself and several others who have spoken in support of the traditional sculpted approach are obviously in group 1. MiTo, you seem to be in group 2, with an unknown number of others, we haven't heard from anyone in group 3 to my knowledge, and the VAST MAJORITY of prospective buyers are likely in group 4.
So what you have to weigh is, will the orders you lose by excluding the members of group 1 or 2 be significant enough to affect MOQ or pricing? They might be. Unfortunately, I don't really have a good solution for gauging what the numbers are in each group.