This is what I'm worried about for our upcoming trip -- our first using FP+. We have an established touring style that has worked well for us on all of our trips and FP+ is throwing that completely out the window and we're having to figure out how to work with it. We typically go on our big family trips in July and were able to get at least three, often four, rides on headliners using FP and rode drop. I just don't see that happening anymore.
No, it probably won't. This was my touring philosophy, as well, but I started to change my approach back when WDW started to enforce return times for fastpasses, and you could no longer collect a pocketful in the morning to use later that night. Instead, I (willingly) planned days that had fewer headliners, but more of the "lesser" attractions that we normally didn't have time for because we were always running from Mountain to Mountain.
I wasn't sure how that would go either, because like your husband and daughter, my family and I are *major* thrill-seekers, and not just at Disney. But, we were pleased to discover that we enjoyed this new style of touring. It was different to be sure, but in some ways we enjoyed it even more---doing a broader set of things in the day made each day feel a little more "full." I didn't expect that.
We've since done two trips during busy times---Spring Break and Christmas Week---with the new FP+ system. It is different, but both trips were great. We saw everything we wanted to see, though we did less re-riding and more of the "other" attractions. We didn't wait in any appreciable lines except once where I mis-judged a wait and it was posted incorrectly. Now that the kids are older, we're taking more advantage of the late park hours during these busy times, and those have been surprisingly easy times to tour.
It could be that it doesn't work for you, though, and if so, there are a LOT of theme parks out there with much better thrills than Disney---and that includes the Orlando-area competition.