I think its mainly a case of that "bad news" will always sell papers, and "good news" (although featured more than people realise) will not always get the level of coverage that perhaps it merits.
From my perspective, one of the things that has greatly improved is that, if I raise an issue of importance to the Coffee Shop or CANBER, Andrew Haines will always ensure that I get a speedy and detailed response, either from him personally or the person responsible for the matter. Frankly, this is in stark contrast to how things were before he came along.
There have also been welcome moves towards improvements on several lines/services (TransWilts being a notable exception.)
However, FGW remain gaffe-prone, and when things do go wrong, they tend to go wrong in spectacular fashion, the debacles over the Exeter ticket promotion and the Free Severn Beach Line service cancellations being good examples. Errors like this could be avoided, and FGW still (in my opinion) have work to do on this front.
Here is a view from the I Hate FGW blog author, in which she notes (with caution) that things have improved (link below.)
http://www.canber.co.uk/?q=node/29