The automatic seat saver really complicates the most basic, simple, and necessary task for keeping a reg in good condition, which is cleaning it. If you want a seat saver, it's simple enough to design something to partially depress the purge button while in storage between dive trips. The lowly R190 has one of these, you push in the purge button, and turn it a little. Even simpler is just to use a quarter, poker chip, guitar pick (my personal favorite) or anything to slightly depress the purge and keep it there. The big advantage of a "system" like this is that you can use it when you want.
Atomic really dropped the ball on that one IMO. I guess it's a tough market, especially when a $30 MK5 or MK10 does the job for 98% of divers every bit as well as a $500 titanium 1st stage.