I agree with you. Becky Adlington isn't going to get invites to sit front row at London Fashion week like Victoria Pendleton or Jessica Ennis, just as she didn't do their glam photoshoots or nab as lucrative endorsements but she'll have various tv offers. SCD, I'm a celebrity, Dancing on Ice would all happily have her.
Punditry at swimming championships would also be an obvious option. Vicky Pendleton is doing the Track Cycling Championships on BBC2 at the moment with Jonathan Edwards and has made a very promising start. Rebecca may not have Vicky or Jess's looks but if she is engaging and informative and has the right presence on camera it won't matter.
Rona Martin, who was part of the 2002 Winter Olympics UK gold-medal- winning curling team, was a really excellent commentator at the 2010 Winter Olympics. She's no looker, but she knows her sport and is good at explaining it.