Titleist Brand Ambassador Ben Curtis puts in some work over on the Harbour Town range.
Titleist Brand Ambassador Kevin Na rips one with his Titleist 910D3 8.5º driver.
Also working hard: Titleist Brand Ambassador Kyle Stanley.
Don't believe they have plans to produce a 15 degree 910H hybrid. Also remember with the adjustabilty of the 910H, you can reduce the loft of the 17 degree hybrid to 16.25 degrees.
I haven't popped the clubhead off yet on the 710, but on the older AP2's I remember there was a rubber plug... is there any issue in just removing this when I reshaft? I remember the heat mangled it last time, so I ended up just heating the clubhead…
RC is right on, launch & spin are effected more by loft of clubface than by type of shaft. 8.5 lofted D2 probably are better option based on your info in thread.
I think you are right on the money. Make sure to go low bounce if you're a slider, high bounce for a digger, and more rounded soles if you like to open the face varying degrees.
And as always, it's best to be fit.
RC