I’ll tell you what would be really cool. Take that there turret ball in that there pic and flip it upside down and set it on the roof of a humvee.
I think I suggested this once before here on FR a long time ago. Maybe a year ago.
As I was leaving the Army, the MP Corps was in the initial stages of fielding the M1117 Armored Security Vehicle (ASV). I think you'll find it pretty much offers what you proposed.
The MPs, to their credit, did a great job cleaning out the snipers from the Baghdad AOR. They'd use their own patrols and troops to bait the snipers. Once the sniper took his shot they'd rush in and kill him. They lost some good soldiers locating those snipers. But they got the job done and everybody benefitted.