Curbishley is the only one I'd take out of that lot but even then I don't think we'd get him.
If we get someone who knows the Scottish game then that has it's own pitfalls... buys the usual Scottish journeymen shite players, fans have their own pre-conceived hang ups over him resulting in less patience from the fans.
Someone from outside - be that an englishman or from elsewhere - could have some fresh ideas for us and no connection to ourselves or any other Scottish club could be a good thing, particularly for the support to start a fresh. But then, look at Ian Porterfield's time. Although he was Scottish he didn't know the Scottish game and he mis-judged the quality needed extremely badly.
Basically, there are good and bad things about both appointing from outwith Scotland and from within. As long as it's the right man then it shouldn't matter where he's from.