I have all the Ace Attorney games.. all the cartridges. I'm a game player and collector. I like to lend my games out to introduce series to friends, I like to replay my games again later, I also like to bring my games back & forth to work, camp, friends, etc..
For me I need physical releases. I really want this title but I will not buy is Digital. I need a cartridge. When Fire Emblem came out it took me 10 weeks to find a cartridge and I'm glad I waited to find one. I expect with enough pressure that there will be a cartridge release since most of the fans of the series were on NDS.
Release a cartridge Capcom. I'll even buy directly from you or from Nintendo. Don't neglect the fanbase that built the series up over the years.