Yes, the plan is to add accretion disks.
While you can obviously make a ring of smaller bodies and watch those collide and grow, that is really a rather crude approximation of the dynamics in an accretion disk. That is why "real" accretion disks will either have to be a special mode or sph, so we can model effects such as viscosity.
SPH will come, though it has almost become a joke in the community. There are just other more pressing issues for now ;-)