There’s too much “Recent activity”, which is distracting:
“likes” have the same priority as forks, edits, publishes… could this be configurable so that it gets out of the way? (either by grouping likes or just ignoring them altogether)
when forking, it seems we get two activities: “you forked A”, and “you created B”
(and it is a bit redundant at times with the “Continue editing…” panel).
The “Continue editing…” panel is for me the most useful; and I wish it had more entries (as well as thumbnails).
I don’t get used to “Download tarball”: the (intended?) usage seems to be to right-click on it to copy a link ; also I’m not sure many users will have an idea of what a tarball is. Maybe this could be clumped together with “download code”, via a new download page allowing to select a format, that would also display useful information & links.