I'm okay with no videos .. or limited/limited-size videos .. would be good to have gifs though. And I'm also up for a pay version that allows extra features - more picture posts? I don't know. The thing with tumblr is - it's free and it's private. As much as people want to complain that things are changing (me included) their storage budget must be astronomical. Most days I'm hitting the maximum of 250 posts. So videos - no videos - I'm fine either way. And I'm fine with a paid feature.
The thing that sets tumblr off are they actually have become communities. There's obviously a BB community, a trans community, there are tons of splinters of pictures (some are b&w only, some are PG, some are NSFW, some are action), there are action-specific communities. You might not realize they exist - because they're not named as such - but there are very specific tumblrs that are followed by people who are into those very specific things.
And by having an instant chat feature the ability to reach out to someone online and be able to chat back-and-forth has really fostered some great friendships with guys around the world. I think that's the part I'm going to miss most.
Anyhow - however you structure it will be great and much appreciated. As my back-up, I think I'm going to start loading some stuff on Blogger. Blogger has a lot less features but they do allow NSFW content. And blogs that I followed years ago are still there when I logged in yesterday.