I've moved back and forth on this quite a bit, as has TGM and the general community, but here's where I think things stand at the moment:
- The points system is pretty effective for what it does, it's efficient, simple, and serves multiple purposes
- GR is pretty effective for what it does, apparently some people place more weight on that which is fine, and it still correlates with points to a reasonable degree so it would be a refinement and not something entirely different
Re: PPSC vs WTA:
- This is a long debate, there's no right answer to it. Even the original creator of Diplomacy wrote an essay on the advantages of either choice
- I'm not very familiar with GR but doesn't it also score relative to supply centers anyway?
- Low stakes games where the only objective worth playing for is victory might as well be 5 turns long, or a 7-sided die, because when someone thinks they're unlikely to win they just drop out and find another
Re implementing it within the site:
- I would like to do this at some point so we can host tournaments on a more official, well supported basis, but apparently the way GRs are calculated is based on a spreadsheet that would be difficult to code(?) There has basically been a back and forth over whether and how GR could be officially implemented, and how, and whether it should be
- GR isn't perfect either, and I think it gets a lot of consideration because it's the alternative to the points system (which also isn't perfect).
The points system is simple and open enough (as well as being the default) to be, I think, more open/subject to criticism than GR. I'm convinced if GR was the default system it wouldn't put an end to these debates, because it's a subjective thing. For example the recent thread where someone said they wanted to be banned because they had a negative GR; if it really was a no-brainer we would have switched, but it's a lot more complicated than that
Finally if you want to get more into the nuts and bolts of this debate please read this post:
http://forum.webdiplomacy.net/viewtopic.php?p=288#p288
GR has since changed, the debate and proponents have become less black and white about it, and it likely addresses more of the concerns than it did at the time, but it's still worth reading that post to get a more complete picture of what the points system is supposed to do, because those who weren't here before the system was put into place and treat it as the baseline situation, which can only be improved from, probably don't realize how it was before