How old the design is doesn't mean sh*t. If it works, it works.What people want is a 70 year old design shotgun. Remington has been dead for awhile. It while be just like High Standard and a bunch of others. The damage has been done.
How old is the AK? 70? And it still works and takes over countries.
How old is the 10/22?
If you look at the gun world, there hasn't been a ton of innovation in the past few decades. Maybe there have been new materials, lighter barrels, new scopes and rails... but the basic mechanism remains almost unchanged.