Between 2012 and 2015 I drilled 7 original Divas with 4 different layouts and have tinkered with every surface from 500 up to factory gloss polish. In my opinion, the Diva is DV8's most middle of the road piece (med strength sym solid, med rg, high diff) and the most versatile piece I have ever thrown.
As much as I trust that ball and could tune it with surfaces and layouts, the traction that an asym solid can give you on fresh heavy oil and the length that a lower diff pearl can give you on burn just cannot be replaced. On top of that, the shapes and varied responses that other coverstocks could add to my bag would fill in gaps that my Divas couldn't replicate.
I hate to say it, but there is a reason why manufacturers work with so many different coverstocks and offer cores with a wide variety of rg's/diff's. The golf analogy has been worn to death, but me scuffing my Diva for oil is like hitting a 1 iron off the tee instead of a driver or bending my 7 iron to have more loft, then opening the club face to hit a flop instead of hitting a wedge. Sometimes there are just better options if we are willing to take some risk and try them. Playing safe with my favorite ball x multiple surfaces and layouts is a safe way to stay around the pocket to cash a check, but its also good strategy to take on a little risk in order to win.
