Interesting comments about the logo. I remember reading an article about Perry and Croft, the writers of Dad's Army. They said that they purpposely wrote a sitcom about a old-time situation - it was first broadcast in 1968, more than twenty years after the war - because there is nothing so unfashionable as last year's fashion. Shows set in the present tense, like Dallas or The Sweeny, look horribly dated now but historical shows, like Dad's Army or Blackadder, can stand continuous re-runs and gain new followers in the next generation.
So, chose something that is already old-fashioned but has stood the test of time (a classic) or chose something time-specific and become out-of-date in a few years time? Perhaps Gransnet are being cleverer than you think.
For those of you who haven't been to mumsnet, their logo is a take on Charlie's Angels. That is no more relevant to today's young mums than land girls/soviet workers are to today's gannies.