Wasn't the Skoda Rapid classed as the poor mans Porsche and didn't they design the first system where the trailing rear wheels followed the front wheels, or something like that?
I'd go with that (or an MX if you want a bit more adaptability). Solid little cameras (but not too heavy), with repairs and servicing still available. I knew a pro photographer who used MX's (and LX's) for many years.
Edit: sorry, hadn't read the whole thread...pleased that you like the P30T, I'm sure that you (and your wife) will enjoy it !
I'd vote for a Canon Rebel of some flavor if you're thinking SLR. They're very competent, but very simple. You can use it as a point-n-shoot, or fully manual, or somewhere in between. They're light weight, not bulky in the hand.
If you're open to a compact rangefinder of some kind, then why not a Contax TVS or T/T2/T3? Brilliant lens, fast, quiet, compact, without a lot of fussy controls. You get aperture or full auto.
I suppose it might depend on the 28/80 zoom but I have one on my MZ7 which was brand new with the camera and it has always felt loose but functions perfectly and has done since I got it many years ago. It is just the nature of the beast with the 28/80 and I don't think you have anything to worry about.