The problem is how will they enforce those values. Are they going to not talk to members who don't belong to the special club ?
Did you not read the article? It says no party funds or party endorsement if you reject 3 or more out of the 10.
I think of the 10 only a few are even subject to controversy for moderate Repubs:
1. Gay mariage
2. Amnesty (McCain)
The others:
2nd Amendment rights? How's that even controversial?
Federal funding of abortions? It doesn't say simply 'abortions', it's federal funding. Again, not really controversial.
'Victory' in Iraq & Afganistan, and/or supporting the military's recommendations? Not really controversial, but also rather vague with a lot of wiggle room. (How is "victory" defined? Doesn't say)
"Small gov, less deficits" etc. Same as above
Same for the rest on the list.
Anyway, they'd get to disagree on 2 before any problems. Since, for example, you could be a pro-gay marriage, pro-illegal immigrant amnesty Repub and still be welcomed I'd say it's hardly any big deal.
What it might do is stop some in-fighting; as long they meet at least 8 nobody can say they are a RINO etc. I.e., it approves, and codifies dissent within the party.
Again, those who disagree on 3 or more aren't getting kicked out the party (although the OP implies otherwise). It's just that they won't endorse you (and why should they) or give you campaign funds raised by the national party (and why should they) if you don't mostly agree with them.
Fern