Working out a list of beliefs that's "close enough" is compromise.
I agree.
What I was trying to say was that these new denominations (new Presbyterian, new Baptist, new Lutheran) would still respect the denominational differences and have alignments similar to their major denomination counterparts. I think this would be a good approach because I think a Baptist plural marriage family might feel comfortable and welcome in a new Baptist denomination that understands and accepts the exercising of their Christian freedom. Or that Presbyterian pastors, elders, and laymen that understand that plural marriage is biblical marriage could comfortably leave the major Presbyterian denomination and join the new Presbyterian denomination as pastors, elders, and laymen. Same with the others.
This is what I intended when I had said, "if the new denomination was close enough in beliefs to a major one".