Taking note of your comment that this is a post-2.0 wish....

I didn't realise it took quite so long to measure signal strengths. I thought I'd read here that it could be done imperceptibly (but more slowly) in the background (that would help address the changing strengths problem) Showing a graph was a wish on a wish, really - a scale with 80, 90, 100 etc (for FM - substitute values for MW range). One thing you could do, though, is highlight frequencies that are in the AF list of the current station, and perhaps measure those. No help if there's no RDS, though...

If this is on the post-2.0 wishlist, then I'm happy. TBH, I'm very pleased that the tuner hasn't just been abandoned since the HSX doesn't have one.