I wasn't suggesting it should focus exclusively on the 70s, but rather from, say, the mid-60s to the mid-00s - at the expense of the current stuff which is really Radio 1's department (as Radio 1 is presumably the station aimed at the teens and twenties market).
I do actually welcome the apperance of more 90s dance music, as I thought that was the one thing lacking about 10 years ago (when it was otherwise pretty good).
Well I'm 35-55 but closer to 55 than 35 (sadly), hence my mixed feeling that there are some improvements and some deteriorations.
I started listening to R2 around 2001, and at the time my opinion was perhaps the opposite: I liked many of the presenters (including Ken Bruce) but thought there wasn't enough more modern music!
I wasn't picking on you specifically, it's just yours was the post which appeared most relevant to respond to with regards how things will change as time moves on.
Radio 2 has often in the past carried modern music, it's just that it is generally been the more acceptable to those outside of the key Radio 1 demographic.
Interestingly it's not that uncommon for Radio 1 within it's dance music shows to play 90's dance music or at least more modern music which samples some of the dance classics from the 90's.
It's where iPlayer comes into its own, in that you can listen to the story of music styles you like when you want to (that and skip over any talking you doesn't want to listen to - for example travel reports when you're not driving anywhere that day).