A yes, certainly. AV is not as good as a properly proportional system (I'd prefer a form of constituency-based STV as in the Republic of Ireland) but it should remove some of the distortions of FPTP. A successful move to AV would open the door to further reform a little way down the line, and also better reflect the country's real mood - which was probably not, for example, to deliver Thatcher landslides in 1983 and 1987, or Labour ones in 1997 and 2001.