And I bet they've been looking at your thread, or are you connected with them?
But this is the engine manufacturer looking at the possibility of increasing the market for it's product. They do mention that they haven't spoke to the airframe producers yet. I suspect those companies have some drawings for aircraft similar to yours. But I suspect the reason they haven't come to light is that it's just not yet viable. With oil heading for $200, it may just yet.
The A320/B737 designs have evolved from a design concept which fits the current market requirements. Your high capacity TP design looks like it is trying to justify it's design by stealing the business from the current designs. But it's going to have to fill a niche, and I don't think the market is quite ready to change just yet. But who knows what the air travel market will be like in 10 years time.
Just one point about the reduced size cargo holds. A lot of routes need freight business to stay profitable. I fly A320s around China and we nearly always have at least 2 tonnes of freight in the holds.