Is there a place or would it be possible to make the list of achievements you miss in the profile ?
Comparing the list of achievments owned and the entire list is a bit long when you begin to have a lot.
Or it'd be nice if the achievements page had grayed out or partially opaque icons for the items you haven't gotten yet. Then when you get them all, they are all normal looking.
I'm having a hard time too. It would be great if it's grouped by each category so we see our progression. I like to prioritize and be organized so it will helped me a lot achieving my goals if this can be adjusted. Thanks for posting this, I bet everyone agree that it's not easy on the eyes looking at all those badges XD
If you look in the greasemonkey scripts thread there are several scripts that do this. For example I have all achievements that I have greyed out. It also sorts them by similar ones.