Hey man, it sounds silly but I'm kindof an authority in this topic haha.
I played a Blue 65x in my r7 Superquad TP until the head cracked and then finally got a new driver this year (TSi3). Anyhow, I had the same thoughts you had and so I bought several Prolaunch Red 65x shafts to experiment.
I set the shafts up all the same length but had one completely untipped, another tipped .75 inches, and the last tipped 1.5 inches.
The tip section of the Prolaunch Red is extremely stiff, and coupled with the higher bend point than the Blue, the untipped shaft felt all over the place at impact. I found I actually prefer the shaft tipped 1.5" the best because not only did this move the bend point down and closer to where it is on the Blue but it also cut out some of the overly stiff (for me) tip section and made it much more playable.
Now don't get me wrong the shaft is still very stout but in a good way
Finally I will say that I hit my new driver predominantly with a fade whereas I used to draw (or hit sweeping hooks) the Superquad. This has actually been a pleasant change. However I cannot say for sure if this is due to the shaft or head difference but I'm leaning towards the head as the Superquad definitely looks more closed at address.
Hope that helps!