However, my complaint about the new Pro and Display are not that they are overpriced (they're perfectly priced for what they are). But that there is no lower end option.
Even if they took the display in the 5k iMac and just made that a standalone thunderbolt display, charged $1,500 for it (even though I would've slightly grumbled), I would've ordered it on day one. But $5k for a display is just something I won't spend.
Same with the desktop. If they had reasonable defaults for $6k, then yes I absolutely would buy it (because of the amazing expandability, and I'm truly tired of laptops).
But the display is to me truly disappointing that they solved problems only a very very small sliver of pros asked for (pro photographers and film people), rather than a secondary class of pros (developers, etc). I don't need true reference-grade color for viewing webpages and code all day. But I would generally like a 5k or 6k display for more screen real estate.