New forum look is more modern but a few things I have problems with UI/UX wise.
Mainly the coloring is weird and busy, especially on the comments and reply section. Could be a personal problem, but the plain gray should be whats behind the part you are reading and the textured black should be the background. Just feels very busy on the eyes when I am reading the comments of the discussion.
There are also some unclear indicators because everything is grayscale with the rare yellow. Before things like new comment on a discussion you were paying attention to was indicated in red. Made it real easy to tell at a breif glance. This includes things like the like button and quote being grayscale now.
I think overall this could be a good change there are some new organization on features but the user experience went down IMO with things like I mentioned above.