Well, since I started out using Mass Production (Ruger SingleSix .22, SBH .44, and S&W 14 .38) I am a bit biased, and would say that this would be nice.
However, most folks start out @ local matches I would think, so whatever the locals are shooting will affect how newbies feel about joining. If your local match is full of TC, XP, BF, FA, DW guns (like mine is) it can be very frustrating. Until you figure out that your not necessarily competing against Buck Rogers on the set next to you. I was fortunate to have a revolver shooter as the match director who made the extra effort to encourage me.
I think your intent is fine, but I'm not certain it will succeed unless you have folks at the local matches - experienced Silhouette shooters - who would be willing to give up shooting 40x40 with their BF for a season, so they can encourage the new Mass Production shooters through the game. Without that kind of intentional mentorship at the local match, it'll be hard for the new shooter to be happy with his low-teens scores, especially when he can't afford an Anschutz.
I realize this is asking alot, but if we're taking the long view, then it may be a good idea for the sport.
Personally, I'm bummed that my shooting buddy - my 8yr. old son - can't shoot IHMSA yet. He spots for me, coaches me, and scores for me, and waits for me to finish so he can take his Chipmunk over and shoot the .22 gongs on the rifle silhouette course. Some day ...