OH GOOD GOD, are you kidding me? the location of the bump-stop is ridiculous on this truck. to me it's more of a safety concern over anything else. I can't believe anyone would put anything that is "designed" to take an impact of any means in the middle of a crumple zone. that's just retarded in my opinion. and screw the warranty it's a lawsuit waiting to happen. I can just imagine this nice family riding down the road with their camper on the hitch and then they hit a bump in the road which bends the frame and then on their way back through colorado the frame then twist because it's been damaged already and it has a catastrophic failure. Family goes off the cliff and die's. Now THAT is not a driver problem that's a ford new about a problem and didn't fix it or let anyone know problem. Result = Millions paid out to grieving family, and a recall.
I'm going to go out on a limb here and say that that crumple zone is probably designed to crumple upwards anyway hence why it will do just that when you smash the shit out of the bumpstop with an axle traveling at high speeds upward.
The Raptor has limits. People found them. It's a stock F150 frame and it's got nicer suspension put under it. You want rigidity you're going to have to brace and tube it. If you want to take hits like the one that bent those frames, you're going to have to add more travel, plain and simple. Bad Company went over that in great depth.
The issue here is that Ford had to make a pre-runner that also passed all the safety standards for various types of impacts. Yes they could have thrown some Deavers back there along with some nice hydraulic bumps, but that cost would have just been passed on to you, the consumer and it probably would have run you more than just buying the Deavers and bumps yourself.
With the stock shocks, you most likely aren't going to be able to "find" more travel in them. if you allow more up-travel, you're going to find the limit of the shock quickly. All the advertised travel is actually there, check the droop travel on it and you should see it.
If you want more travel, it's going to cost you, there's really no free lunch in that department.