Scientifically speaking 24x can be done and has been proven on lab scale allready . Infact DVD recordables have a better surviving change as cd-r's thanks to the full bonding which means that cracking will not happen as fast.
However the question is why do it ?
Well the only reason is the speed marketing concept.
In the old days the speed marketing for cd-rom drives was quite important.
However the scattering disc's incidents have partially killed it.
It's not only the speed you also need to proof it's safe and is working good. (Seeing the C't test results and some other stuff that came in today means that 16x isn't really market ready.)
So next your disc needs to be of a even higher manufactureing quality.
Which means even more fall out. So only if you can get people to pay the higher price you got yourself a deal. So this again puts us back at marketing.
Now how much time will you safe. Probally 2 seconds at best.
Why so low ? Well allready the CAV/z-CLV formats need increasing we allready know that.
However at these even higher speeds you have a good change that the calibration time will be even longer killing allmost all the time you won by going faster.
Also there is another thing. Which drive manufacturer will be insane enough to support this? Since you mention it's a taiwanese companny we all know that even if it was a standard product it would take quite some months for the japanese compannies to support it.
The only reason why 24x DVD recordables should exist is for the faster creation of coasters. Still buying your coaster directly is faster but then again you don't have the fun of makeing them. -R. Wilting 13-1-2005.
(Hmm I really like this one might make this my private signature.)
Let me say this if you have any influence tell them they could better spend the money on the development of next generation media our on faster DVD+/-RW's since I have reason to believe that even 16x for these might be possible. Or if they really want to burn money because they want to be inventive tell them to work on Dual Layer Rewritable DVD's.