Just two ideas for the public Mecabricks profile which seem fairly easy to implement in my opinion.

1. You are able to sort your models in folders and subfolders on your own library page, making it pretty easy to navigate and keep an eye on your model collection. On the other hand, public profiles do not have any of this, they are sorting the models someone made dependent on their release date. I think that having the ability to create folders and subfolders on the profile could be a nice idea, e.g. "Sci-Fi", "Official Sets", "MOCs" etc. making it easier to navigate through the profile of others when looking for something.

2. Instead of having "only" the back/forward arrows at the bottom of public profiles, I would suggest using the forum's page navigation, the "page x/y/z/last" as well as the "Page x of y" function. This would make navigation easier, especially when you're looking for someone else's model that is at the end of his model collection.