The spinning image was already a topic in another question: https://forum.mendix.com/questions/6387/How-to-implement-a-spinning-wheel-in-a-Mendix-5-theme
I know that there was also a question about the breadcrumb but have not found that one yet.
[EDIT] found also the post about the breadcrumb here. Would be nice though if Mendix gave its view about this one.
Hmmm, this is sad. We have to go change this in 452 places then... :(