Steeda has not been on this forum for quite a while. They had asked for input on what Edge owners would like to mod, but we received no feedback on their development plans. I am sure they are busy with Mustang-based sales, and 3.7L owners can benefit from that. 2.0L Ecoboost owners can probably get tunes soon, since they are in the works for the Fusion and maybe the MKS. Have heard you can already get a tune for the NA 3.5L from SCT/Unleashed Tuning. Springs-wise, H&R is about your only option. I don't think you will find anyone selling traction bars to reduce wheel hop etc.
But beyond that, you are pretty much on your own, doing on-off performance-related mods, or sticking with appearance/electrical mods.