Here are the most pressing issues as of now, in my opinion.
1. The editor
It seems to really dislike using the plain text editor, it doesn't allow for simple use of BB code. (Selecting a piece of text and Ctrl + B or press the "B" button to boldify it doesn't work) All of the BBcode options are disabled and the WYSIWYG editor is the default one. I find this extremely inconvenient.
So it auto embeds videos? I don't want to embed every video I link at all!
Also, why does it have to center? It really messes with the usual left-to-right layout of the forum and its posts.
As a feature I would like to suggest being able to embed videos in 480p format, which this forum easily has room for.
They're thumbnailed by default and have this flashy fullscreen animation which doesn't even fit properly.
I'd appreciate if images were just images; displayed as they were. If they're wider than the forum allows, they should be resized to the maximum forum width like on the previous forum. As an extra feature, it would be cool if THOSE images did actually enlarge (Open in new tab) when you click on them. But don't unnecessarily scale images. On this post you can see how the picture fits the forum perfectly well but is scaled down and the text is rendered uneasy to read.
Of course I find the old forum link issue the most pressing of all, but I kind of gathered that this isn't going to get fixed, sadly.
Lastly I would like to be able to Lock and Stick threads using the tickboxes under the reply box again.
Good going so far Gio!