Mark Cuban would not invest in NXT in its current state. I think those funds would be put to better use in development.
The goal behind contacting Mark is to inform him about NXT. Hopefully once he knows about NXT, he will let others know about NXT. This is no different than me or you telling our friends about NXT. Mark just has broader exposure. The goal is to empower individuals.
I give NXT to my friends all the time. I'd be willing to give Mark some NXT as a friendly gesture.
If the goal is exposure then by all means, but people talking about sending him 100k+ NXT are being foolish. That's NXT that should be spent on development.