I understand the frustration with their cowardice, lack of integrity and convictions, but other than the carthasis, is there any point to asking for this? Does anybody expect it to change minds? It just seems like the "old guard" or traditional Republicans are already there and there's few, if any, prospective converts that this would resonate with.

However, having cohorts of former Republican officials line up against Trump would give him more ammunition to allege that everyone is out to get him, that the "establishment" and "deep state" oppose him, that the election was/will be rigged by these haters and other mysterious forces, and that only *he* can change things. In short, it fuels his narrative and drives up the appeal of his quixotic candidacy. Fear and paranoia make powerful narcotics, even to otherwise intelligent and rational people. I don't think we should give him that.

TLDR; If by Republicans speaking out collectively they are constructing a victimhood argument for Trump, then they are also inadvertently lending credibility to his campaign, and that's much worse than if Republicans simply stayed silent.