I don't really care what they do in Persona 5 as long as they have the main characters be adults. I think every Persona fan has been asking for that and I'd really love to be an adult and instead of going to school every day you could go to work, and maybe let the guy be a single father or something.
Anyways back on topic, yeah it'd be cool to summon them with cellphones. I always thought the gun thing in P3 looked cool.
^ This. Also the persona games always seem to have a low tech summoning mechanic (card, gun), while Devil Survivor uses technology (cell phone, DS looking thing).
Less Devil Survivor, more Shin Megami Tensei in general. What usually happens is someone makes a program that summons demons and all hell breaks loose. --- Currently playing: Persona 4 Golden (Vita), The Testament of Sherlock Holmes (PS3) Raiiiiiiinbooooooow!