- I'd recommend adding a way to add multiple channels at once. The current workflow works great for adding a single channel, but it was tedious to add more than one channel. I imagine most people using this service will add many channels at the beginning.

- I'd like to be able to keep the same channel selections on multiple devices. Accounts and/or sync would probably be a lot of overhead to implement. Maybe some kind of unique link that contains a list of channels, like how PCPartPicker creates unique links for each build?

- Someone else mentioned this, and I'd like to +1 it - clicking the channel in the Channels section does nothing, when I'd expect it to show the channel's videos.

Other than that, I love it! Great work!