Should we market our MMJ experience to get into big markets? Is it worth it to MMJ in big markets? Will we ever just be reporters again, haha?
First, consider the top request of nearly every one of my clients: "I don't want to shoot my own video anymore." (And yes, there are still plenty of quality shops out there that have photogs.)
As for your question, let's put it this way... you don't always need to be an open book. If you mention to a News Director that you can produce, guess what? At some point in the future, you'll get stuck producing a newscast. That said, you're a reporter first, and a photog second. If you tell a ND you're a great shooter, then he'll have no reason to ever assign you a photog.
Should you be asked if you can shoot, be honest. But if you want to be a reporter and avoid shooting your own stuff, don't put MMJ on your resume. Your job description is "reporter" and that's it. You don't put the fact that you write your own packages on your resume, why let people know you shoot them as well? When a ND first looks at a tape, he has no idea who shot the video.
There are big markets using one man bands, and it can be a foot in the door. But if you absolutely don't want a job that forces you to shoot, don't take one. Remember, the quality of your work will improve if you work with a real photog.
As for part two of your question, significant research is underway to find out how to send reporters out as holograms and cameras out as hovering drones in order to eliminate news cars. The latter would entail attaching lipstick cameras to trained hummingbirds. If that doesn't work, you'll see reporters like the ones in Star Trek Generations, in which Captain Kirk was interviewed by reporters wearing cameras strapped to their heads. Beam me the hell out of that beancounter reality.