Only those who need internal expansion and those die-hard supporters of the older designs, also called: Traditionalists. Traditionalists are a type of pro user that resist change and still believe that the older models(think here, 2008,2009,2010-2012) will suite their purposes well into the future without having to give up for another model.
I think this is going be a Mac Pro for those who want change versus those who resist it. Me personally, I think the new Mac Pro is a nice design, but lacks certain things that I would like to see, such as upgradable CPUS, upgradable video, etc.. we simply don't know what is user replacable in this new form of Mac Pro.
But in the end I believe there will be two camps: Traditionalists and NEO-Pro Users who will jump on board with the new design.
I think that's a poor description for what's happening. It really isn't so much about something being new or old. I think most Mac Pro users wanted something new that would retain the value and flexibility the Mac Pro represents.
It's more about the planned obsolescence the new mac pro embodies. As others have said the iMac'ed version of the Mac Pro. Value vs Fashion.
Pro users pay a premium for power especially on a mac and they expect to get lasting value & flexibility out of that purchase. Bricking the graphics, dropping down the number of cpus and making all expandability a more costly and speed choking external only option are all things that reduce the life & flexibility of the product and therefore its value.
From reading posts the only people that seem dazzled by the new mac pro are the ones that are easily impressed by its speed bump. Did anyone expect a new mac pro - especially one with a 3 year wait - not to be exponentially faster than the old one?
The types that don't care about the new mac pro's disposability are likely
1) apart of a large business that will cycle its machines every 3 years or less regardless
2) aren't actually in the market to buy it but rather to proselytize everyone on how great it is because secretly or not it's their juvenile dream computer
3) have too much money and can waste it on a computer that has an inferior life cycle to previous mac pros which apparently doesn't bother them. But then when have fashionistas cared about what they buy going out of date too soon?
I don't see this new Mac Pro doing well at all. Most loyal Mac Pro owners seem to be holding on to what they have, buying old and planning to wait this out. Even if I liked the new mac pro (which obviously I don't) and wanted to buy it, I don't think I'd risk my money on this new design with the bugs I'm sure it'll have. The price will likely be as high or higher than previous Mac Pros so I don't think they are expanding its accessibility in that regard.
If in reality this is the only new Mac Pro we will be dealing with for the foreseeable future I think Apple has just fragmented their mac pro market more than anything else - provided none of the issues I mentioned are somehow addressed in future versions of it.
