I think a way to improve the past post profile.
Would be the ability to be able just to search your posts in easy manner and to be able to sort you own posts in to folders.
Example: You reply to a topic about meshes, wondering the same thing that was posted. Learning some great that you want to keep. You could tag that post as “Meshes_spawn” for example.
Then later on you want to reference it. You can scroll down to meshes, and look to spawn. You then have a direct reference back to that topic.
And in you profile, instead of going to advanced search, just have search function there for people to search their own posts.