You have to look at it as an overall consumer. Did the old Sky3DS save you 100's of dollars? Most likely. Worthy Purchase. Will the Sky3DS+ save you 100's of dollars on currently released AP check games and future AP check games? Yes. Worth the purchase. The fact that they are adding in a firmware upgrade is a huge plus (pun intended), that gives the product a guarantee. Other features such as not having to use diskwriter and having back/forth buttons are just extra goodies.
As of today. NO. The orange cart won't be worth it. In 6-12 months it will perhaps be worth it. There are no AP games I'm very interested in.
The blue cart was worth every penny for me though. So if someone don't have any cart, the orange is worth every penny
But for us sky3ds owners. It's not really worth it atm.