To fix JRPGs, they should make it much more engaging which can create a clique of that franchise.
See: Persona 4, Valkyria Chronicles, Skies of Arcadia.
Also, they should make it charming and light if they can't make it epic or deep (see Persona 4?). If they want to make it epic or deep, they should do more research enough to cover the plot holes (see Xenosaga).
Now Playing: Star Ocean: Till the End of Time (PS2)