IS PR a bad thing? No, it isn't.
"This will mean a big kiss goodbye to whatever is left of regional representation by supposedly local politicians and a warm welcome to government by whoever kisses up most to the top of the hierachy (sic)."
That's extremely unlikely. You seem to be assuming that the 600+ constituencies in the UK will be replaced by one mega constituency covering the whole of Britain, with all politicians aiming to get a quota in THAT. The Scots, Welsh and Northern Irish would never stand for that. What would be more sensible is form new seats from 5 or so of the existing seats, with 5 or so politicians elected from that. You get regional representation AND PR.
One PR system I recommend is the Hare-Clarke, which has been used in Tasmania for more than 100 years.
http://en.wikipedia.org/wiki/Hare_Clarke
The beauty of that is that people vote for their candidates rather than party lists. It allows people to choose WHO they want to choose, rather than their party. Say you like Party X, but their local rep, Basil Timeserver-Hack MP, is utterly useless. You can still vote for other candidate for the same party. It happened in recent elections down there; people got sick of certain members, and ended up replacing them with people from the same party. It's so different from FPTP; people may like a party, but then have to stick with the all-too-common flunkies and deadwood that the party puts up to represent them.