I really think this is one of those apps that flies under the radar but can deliver a lot of promise and capability.
Baris is not the most responsive on here, but is responsive in the software development, I could see this and despite being a tad frustrating answers have come forth.

The API documentation is available on the site.
PSD templates won't go back to the $120 they once were charged for so that's a significant saving for Sumo's.
I don't think the number of credits is an issue more is nice but If you are really eating up the credits then you can afford the monthly... IMHO

It would be good to see a fully flexible template creation process, a tie up with Relay that to import creatives from would be cool.

I haven't checked out whether other sumo deals for license free music deals can be used here without issues on copyright flagging up.

I see the potential with this and you should too. Baris is committed to the product and the c/s will come I like what I see and will take the long view on this software. Easily 5 tacos for what it is where it is at and where it can go!