Jay,
Tough call here. Usually when I think of the phrase "best of both worlds", it usually means that you don't get the full value of either world.
My home table in my pool league is an 8' Valley in pretty good condition. I've played on this table for 10 years plus, and am quite familiar with it. Overall, I like it a lot. Over the last 10 years, however, I have played the vast majority of my pool on 9 footers. On an 8' for 9 ball, however, I think it is kinda the worst of both worlds. This is because the pockets are large and easy, which means ball pocketing is easy (like on a 7'), however there is more room to play looser position, which means your speed and shape doesn't need to be as good (which normally can offset the easy pocketing on 7 footers, especially in 8 ball where there is so much congestion).
In a way, I feel that the 8' table takes pool as far away as possible from the demands of a pro caliber skill set. I feel that I have the greatest chance of being beat by a lesser player on the 8 footer. However, I will say that the break on an 8 foot table is closer to the "real" thing---on a bar box anyone can learn to break VERY well. On the 8' you have to break a little better than on the 7' to get good results.
Now, when we throw into the mix that it will be Diamond tables, this changes things slightly. Especially if you wanna go with the pro cut pockets. Now I think the ball pocketing edge is reduced considerably compared to a 7', and the quality of play goes way up. This might be great.
I am still wondering, however, what is the main motivation for this idea? Is it simply to promote the 8' table size? Is it an issue of space? Are there a lot of unsold Diamond 8' tables sitting in a warehouse that need moving? Or is it just a simple attempt at doing something different. Whatever the reason doesn't really impact the merit of the idea, though I can't say I'm not still curious.
KMRUNOUT