No problem. I’ll probably order a D7200 in the next few days or so, been too busy so far. And since I have the same housing as you - I can let you know 100% that it fits perfectly (which I 99.9999% fully expect it to) - if you are not instantly going to buy the camera.
I'd rather camera manufacturers spend time/money improving features rather than paying for new molds or tooling.
It is a noble goal. But probably the most important feature for a lot of housing manufacturers is getting housings on sale ASAP. I have read so many examples on this forum of photographers saying my favourite is brand X, but I bought brand Y because it is on sale now.