If the senators vote in accordance with their party, yeah, this stacks up somewhat well. The problem is, there are a shit-ton of RINOs in the Senate. Mittens, Susan Collins, Murkowski are probably the most extreme. Most likely others too.
More so than how they vote on individual matters, I'm most of all concerned about how they vote when it comes to organizing the Senate; who's going to run it.
I imagine neither of us have much affection for Susan Collins, but her vote on organization of the Senate counts a great deal for an overall agenda (in the case of Republicans, a conservative agenda). As long as she helps keep Republicans the majority party in the Senate, she's helpful to all of us.