Elegant for the Mac laptops. For the Mac mini ( and Mac Pro if had Thunderbolt ) there is the question of the dangling, superfluous power cord. Apple doesn't always go for elegant. It is more combination of elegant and quantity.
It would make sense to come up with a Thunderbolt-less $799 monitor. There is little to no margin loss if they simply just dump the additional TB complexity, power distribution complexity, and cost along with the additional price. It would still share costs with a TB docking station ( 27 panel and most of the enclosure design) but only would have a USB 3.0 hub instead of a full fledged USB 3.0 controller ( Ethernet , FW would drop also.).
So it does less non display stuff and you'd pay less.