Do you think these points make Europe/the EU more important than the US or China? Otherwise, they don’t give a reason for focusing on the Europe/the EU over these countries to the extent that this focus is mutually exclusive, which it is to some extent (e.g., you either set up your think tank in Washington DC or Brussels, you either analyze the EU policy-making process or the US one).
Reasons to focus on the EU/Europe over these countries are in my opinion:
personal fit/comparative advantage
diminishing returns for additional people to focus on the US/China (should have noted this in the OP)
To answer your question: no.
I basically agree with this comment, but I’d add that the “diminishing returns” point is fairly generic, and should be coupled with some arguments about why there are very rapidly diminishing returns in US/China (seems false) or non-trivial returns in Europe (seems plausible, but non-obvious, and also to be one of the focuses of the OP).