That was my thought, whitefeathers. Its a bit tricky hitting the right note in Wales as the Welsh Govt aren't actually too bad (IMO) and we do have some genuine left alternatives to vote for with Plaid esp under new leader & Welsh labour.
But the bottom line is that the cash is decided at Westminster, so we do need to make our voice heard there, despite the fact that we are so far away & remote that they are never going to be that interested in us! (Our particular bit of wales, that is, not suggesting Cardiff/Swansea etc remote though you'd think so from what you see on UK national media)
I went to the big conference back in June, SWP were there but we're very much resigned to crappy stalls outside. The people's assembly is simply a coalition of left leaning groups against austerity, key speakers were Rania Khan, Owen Jones, Len Mcluskey, Tony Benn etc. It's not at all party political but a forum for discussing and planning direct action (such as the campaign to save Lewisham Hospital). There was a bit of infighting (which will always be the left's downfall) but in the whole I feel it's worth being involved.
I did go along to the meeting, and was actually much more impressed than I expected. The speaker was very much about making it not 'party political' and simply bringing together a coalition against the one specific issue of austerity. (Obviously some people may not agree with this point, so it wouldn't be their thing!)
It definitely wasn't just the 'usual suspects' locally who were organising the meeting.