Separate Product Ideas from Contest Entries in profile page.
Often I enter in other builders' profiles to check their builds. Would be great to have Product Ideas right away on top, not mixed with contest entries and activities. The filter doesn't help much in that way.
Otherwise you could let the builder to personalize his own page.
Please consider moving activities to a separate tab. It looks weird having activities mixed together with submissions on a person's profile... especially now that the "LEGO Brick Museum" activity results have been added in. The LEGO Brick Museum addition was more of a survey than a building activity, so it looks so weird seeing it next submissions.
So it is easier to find the contest entries of ours if we have too many.