1) Didn't import all of my subscriptions. Specifically The Patch from Roosterteeth. Considering the opml file contains the URL, I don't see why this happened.
2) At least one or two podcasts I deleted a long time ago got imported. I haven't examined the opml file but Downcast doesn't show them anymore. So either Downcast is doing something wrong or the import is.
3) I read the Skeptics FAQ. That's really helpful.
4) Despite the FAQ I still don't see why the account is needed. I very nearly didn't create an account. If not for knowing who Marco is I never would have. I feel very strongly about this with apps. Unless there is a clear and compelling reason to need to signup for a service then I don't.
The design is nice. But there's nothing compellingly different about this app compared to Downcast. It also has voice speed. It has lots of fiddly bits if you want to tinker with individual settings. Pay a couple dollars and get Downcast and you don't need an account.