And yes, in some states, republicans are too conservative and they could do much better if they were more moderate, the South Carolina Republican Party, and I fail to see where hackery is. I have said too that Republicans in some blue states were really competitive, like in Oregon, Nevada, Connecticut,... I have also critized the OH democrat party for being a mess and for failing to win some toss up/lean D state senate seat.
Huh? The SCGOP at present controls all nine statewide offices, the General Assembly, and all but one member of the Congressional delegation. While they aren't entirely dominated by wingnuts, they certainly are predominating and I fail to see how they could possibly do better than they are doing even if they did take a turn towards being moderate.
The SCDEM currently holds 5 senates seats in conservative area. So yes, they could do better.
You are not going to have every seat go monolithically the way of their PVI. IF that happend CT would look like HI and there would be next to no political competition in the state. In fact the sheer dominace of the one party would tend to push swing voters in those not as pro-Dem seats to vote for the right Republican. Western PA used to be Democratic, Philly Burbs and CT Republican and there are towns and cities with politicians that still reflect this phenomenon and thus produce candidates who can win districts their party otherwise would have no business winning.
Using that to judge the condition of a state party is over generalizing from too little data. "CT is strong, SC is a mess" simply because in the former the GOP holds a few contrarian PVI seats and vice versa illustrates plainly what I mean. SC is nearing Texas levels of Dem exclusion from statewide offices and the GOP has solid majorities even without those handful of districts. That said the SC GOP is a mess because it is factionalized and not just between tea party and moderate but also between upland former-Democrat porker barrels and more fiscally conservatives to libertarian types like Sanford on the coast.
CT failed to deliver a single House seat, the Senate seat or hold Governorship for the GOP in one of the best GOP years in decades.