I guess you have done all of these because you seem to know for sure....
Maybe were comparing apples to oranges here....I can tell you that I can lower the front of my ranger roughly 6 more inches before the center comes close to the cross member... But I wouldn't have any up travel at all and the tires would be at the hood. I don't think pumpkin to cross member is the limiting factor in more peoples minds, as it was not in mine because its been modded as you said....But I guess some people would rather build a TTB whatever than modify the cross member. I went the latter route, moved the front end forward about 4, mostly to improve approach angle, and modified the cross member.
So instead of spending money I dont have on an weaker setup, I went bigger and moved stuff around a little.
Either way..... You can have your TTB and ill take a d60 and be done with it...