The shiny gems from 6 reps onwards was definitely better than it is now.
And the spoiler button is definitely too big. In fact, every orange button is too big now (and the thumbs, like mentioned before) - sticks out far too much. We come here to read posts, they should stand out more than anything. But it seems like the complete opposite.
Has the font of the title gone smaller as well? When you read it on the thread, not on the forum page? I think that should be a bit bigger than the same font as the text in posts, and not just made bold only.