I'm not arguing because I really have no idea, but how do you know it was "rushed onto the Prestige line"? Also, where were the Edge, Lo Pro and Edge Pro made? The only design flaw I see is that it's not very comfortable (at least for me). As far as I know, it functions as it should, no?
Well, it being rushed into in for 2008 seems the most likely conclusion for them to release such a god-awfull trem. Either they rushed it, ie, didn't give enough time for proper tests/not enough time to redesign flaws etc... or
, they didn't rush it, knew full well that it had issues, and released it anyway on the grounds of money
. Actually, now I think about it, it could be either, knowing Ibanez these days...
The Edge, Lo-Pro and Edge Pro were all made in Japan by Gotoh.
The Edge Zero is made in China. Along with bad design, it has bad manufacturing too. And this is the bridge 99% of top-shelf Ibanez's are sporting now.
"The only design flaw I see is that it's not very comfortable (at least for me). As far as I know, it functions as it should, no?"
There are tons of flaws, either design or manufacturing.
Fine Tuners are crap,
Intonation tool screws into the trem like a wart. Couldn't they just have included it in the bag with all the other tools?
ZPS system is either flawed, or some systems work better than others. Either way, it's either a design or manufacturing issue. When setup correctly, it gives a flat return on a pull-up.
Tiny sustain block to make way for the ZPS which doesn't work properly..,
...Which naturally leads to less sustain/tone,
Also because of the tiny sustain block, there's only room for two spings, which makes using higher gauge stings difficult. (You're really screwed if you want high gauge springs and the ZPS system.)
None of these issues we should have to deal with on a "Prestige" guitar. Even if these problems were solved, most people don't like the feel/look anyway...
Yes, it stays in tune, but so do the previous trems. And those ones didn't have ANY of these issues.