Here are my thoughts, some of which might be wrong;
 - display ports are cheap and easy to put on cards so it's kind of a pointless excercise to remove them;
 - virtually nobody is mining with stock nvidia cards; aftermarket cards is where it's at;
 - knowing nvidia, I can't imagine these cards not just costing less than their gaming counterparts, they'll very likely be more expensive for maybe slightly more cores but there's no way they'll be better in terms of price per performance. Every specialized (enterprise) cards are disgustingly overpriced;
 - nvidia not liking miners is just nonsense; GPUs owned by miners rarely ever get faulty, maybe only a couple of percentages more RMA than regular users but the increased number of sales should more than make up for it. (There's a reason as to the length of the warranty periods);
 - nvidia might have zero idea what features mining cards need, therefore they could be useless outside of a few coins (similarily to ASICs);
 - but if they do, what would be scary/awful is if nvidia would also provide their closed source miners.
 - these cards would have massively reduced resale value, just like ASICs.

I certainly don't hold my breath and kind of certain/hopeful that it will flop.

The single most beneficial thing of GPU mining is that virtually everyone has one which can be used for mining, eg. distribution of GPU-friendly PoW coins is great. Introducing a specialized hardware for miners would turn GPU mining into the same old  lifeless industrial world of ASICs with poor coin distribution since not everyone is going to have one of these.