....to our forum!
Well, I'm with Steve here, 5070 is very nice, but even adding a hour counter would be too much, IMO. 
I find the case style, functions and dial layout/design are pleasantly consistent - which isn't found that often.
A perpetual would require a different feel and look, IMO - something like the 5960 case (not the dial
) for example.A little bit more rounded, more "Rubens" 
Best regards
Suitbert