According to Ahigh's videos, a bouncy table is preferable so that you can get the dice above the rubber pyramids when you hit the back wall.
Evidently this is what some of the dice schools are teaching also. If you look at Heavy's Axis Power craps video, a lot of his tosses bounce over pyramids on to the flat part at the top of the rubbers.
Hopefully I'm not hijacking the thread, but there are other ramifications of having a non-bouncy table as well. The dice get more banged up on a table with a harder surface. Right now, the western-most table at the Silverton has a very hard surface and it does not bounce much at all. The sound is totally different, as is the bounce. There are variations of different types of bounciness on tables, and quite a few of them at that. There is a common type of padding that goes under a felt, and some places will put a new felt over an old felt. Triple felts gets yet another result as does no padding. That four different types of bounce characteristics without even getting into different type of materials or wood. The tables at Sunset Station have MDF instead of plywood underneath them. MDF is very rare (and a sign of a very inexpensive and/or custom table [EG: from a carpenter on craigslist]) that may take some getting used to. I have no idea myself which types of bounce are theoretically more exploitable than others, but bounce is a very critical element for any shot, and you have to practice to get enough samples to have feedback on how you're doing.
The casinos are likely best to just keep changing their bounce and that's what they generally do (just not really frequently).
The early days of the MGM when I was there had the bounciest tables I ever saw. The dice routinely bounced off the table and when they stayed on the table they bounced all around. Had a very bad session on the right side.... felt stupid - given all the crazy bounces should have played the dark side.