A stand for those massive Numark controllers? no they don’t make stands for those because they’d have to be massive to take the weight. (Own an NS6) I’ve also never seen a flight case with legs at all, and I look fairly regularly. As for stacking gear on top of other gear, usually that’s considered a no-no as you might end up breaking something while you’re Djing unless it’s covered by a flight case.
I’ll be honest, you should maybe look at getting a smaller controller as usually the only time you see the big ones is if everyone is going to be using it or if you’re a mobile DJ. They’re HUGE, weigh a ton, aren’t easy to move around or setup & teardown. Generally it’s not considered too bad as well if you’re headlining or playing a long set, but otherwise, it might be best to have something like the Reloop Terminal Mix 8 or something along those lines if you absolutely must use a controller. Since you also own a DVS box, I’d hold onto that as it might be easier if you’re playing a short set to use that instead of a controller.
I won’t stop you from getting what you have your heart set on, just think about why most DJs use things like the S4 or DDJ SX2 vs something like the Numark NV or NS7s, if they even use a controller at all.