At first I was thinking "Why would I need to interchange the bezel?". Seems silly to me initially.
But now, I started to see that the interchangeable bezel is a nice touch. As sapphire crystal and ceramic/sapphire bezel insert are highly scratch resistance, the steel bezel will more likely be the next scratch magnet, especially for thick watches. So for those OCDs, myself included, would like to have a peace of mind of having a spare bezel replacement, many years from now.
The only setback is that the interchangable bezel will increase the overall thickness of the watch. Not a problem if you are not looking for a dress diver.
If the dial & bezel insert design are done right, and the pricing is affordable, I think Maria might have another winner here.