Like the title says, it'd be nice if new works could be added to an existing portfolio on upload, rather than having to upload first, then go to manage submissions -> portfolios -> edit the portfolio -> include -> save changes.

If this is already a feature, I couldn't find it anywhere on the upload screen, and it should probably be made more obvious.

It is not already a feature, but it is something that I can work into the site. Thanks for the suggestion!
-- BK

Sure thing! Glad I just wasn't being oblivious, hehe. (I often am, to be fair.)

I have one or two other suggestions as well, but I suppose I should make separate threads for them, and I'll wait a bit so it's not like I'm flooding the forum. xD

It's all good.
-- BK

it would be great to add new submissions to groups too, to make things faster

I can look into doing that. But, that might be a little complicated. We shall see!
-- BK

For comparison, DeviantArt lists a user's gallery and/or subscribed Group folders as tick-boxes. I was a bit surprised S7 didn't have something similar—I definitely could've used it when I was mirroring my stuff. XD