The problem with DLP (at least according to the TI tech docs) is that placement flexibility is somewhat at odds with native contrast ratio... brightness and contrast ratio are a tradeoff in the design of the PJ. A large offset seems to be the design of choice for maximizing contrast ratio (at the expense of brightness). Look at the DLPs that have good native contrast lately (HC4000, W1070)... they have placement above/below the screen. Now compare that to the native CR of those that have center placement flexibility: W7000 (DC2, <1000:1), xv-z30000 (DC3, <2000:1), and even the runco LS-5 (???, ~2500:1). While it would be great to have a center-placement DC3 DLP with >4000:1 contrast, I'm not sure it's possible. Having said that, a good DC3 implementation in a W7000 successor could at least get the contrast near 2k:1, but would likely cost it some brightness. Except for FI, the XV-30000 may be what a W7000 with DC3 and good contrast would look like???
My ideal W7000 successor would have offset for better CR, long throw to minimize the angle (and maximize HP gain in an offset config), and would add triple flash for 3D.