I don't think it's that simple as just slaping a CDMA chip. Not only they would need to make the iPhone fatter/bigger but would have to redo the whole OS to handle CDMA and it's only talk and no data limitations and many other things.
Nope.
The OS already handles situations without simultaneous data+voice. Remember the first iPhone? Not to mention the current model outside of 3G coverage.
As far as size goes, there are CDMA+GSM phones that are pretty slim. However, I agree with those who doubt that Apple would manufacture a single worldwide model with both. Not cost effective enough for them.
Is it worth it for them to make their device compatible to an old, soon to be retired system for a year or 2 span? Maybe, maybe not.
Apple obviously doesn't care about model longevity, as their first EDGE only model was practically useless in much of the non-EDGE-supporting world.
CDMA is not going to be retired anytime soon. Not sure what you're talking about there.
Apple already redesigns their iPhone circuit boards once a year. Technical reasons aren't a blocking point.
The better arguments against a Verizon iPhone are the ones about branding, money, insurance availability and other business decisions.
This 100 times and more. I even lol'd hard at the Verizon tweet that said big announcement the same week the iPad was announced. I bet it wa sa bucket of cold water to know AT&T was going to carry it again.
Only clueless web "reporters" thought the Verizon tweet about their annually scheduled employee meeting had anything to do with the iPad.