Regarding tilting your screen to account for the offset, that will work, but it is not the universal solution for all nor does it mean that offset is a red herring. In some cases the "slight tilt" won't be that slight at all. Based on the degree of tilt you need, you may or may not find that solution appealing.
The InFocus SP5700 has about the same offset as the H72, and the Excel screen calculator for the SP5700 will calculate the screen tilt needed to correct for a projector tilt (no doubt InFocus received complaints about the 32% offset just like Optoma currently is, hence the need to include the screen tilt calculator. Note that the SP5700's current version on the IF website does not contain this, but I have an older version that does. I'll try to find that version somewhere online and link to it later). Tilt varies by throw distance, and since the H72's farthest throw is close to the SP5700's shortest throw, you should use the SP5700 short throw figures when determining tilt.
EDIT- here's the SP5700 screen calculator:http://www.infocus.com/service/sp570...%20english.xls
Here's an example that I don't think is going to be that atypical:
Your HT is in a basement with a ceiling height of 7'5". You want a 110" screen and you plan on mounting the H72 at the far end of its throw range. That means the offset is 38% (that assumes that the manual is correct and offset is dependant on throw distance and varies from 32% to 38% of screen height).
If you run the math, that puts the bottom of your screen at:
89" ceiling height, minus 5" mount drop, minus 20.5" offset drop, minus 54" screen height, equals 9.5 (call it 10") above your floor.
If you want to achieve the "eyes 33% up from the bottom of your screen" rule, you need to get the bottom of your screen up to 24" off the floor (42" average eye height - 18" = 24"). You need to raise your image up 14".
If you plug the numbers into the SP5700 calculator and use the short throw figures, you'll see that you need to tilt the projector up around 4.5 degrees and tilt the top of your screen out from the wall by between 4 and 5 inches.
I can only speak for myself, but I don't find that very appealing at all. With that degree of tilt I'd be willing to bet that you could tell that your screen was tilted while watching a movie, and I would find that distracting.
I will say this however - although IMO the offset is less than ideal, I think most people who say they can't consider the H72 because of it really COULD get it to work if they are willing to accept some compromises. You could tilt the screen, you could tilt the projector and then mask off the trapezoidal part of the image left and right (focus uniformity may suffer however), or you could simply accept the fact that the image is lower on the wall then where you'd like it. Of course, not everyone will find those compromises acceptable, and if that's the case, the offset would eliminate this projector from consideration for some.
I will now officially stop harping on the offset and move on.