Do not expect any real answers to the point.
see relevant topic to announcements where Sael doesn't answer the relevant to 3.8 questions and the general reluctance of WG members to even reply to forumers.
regarding SP compensation to US server, as I have also an account there, I can tell you that was as poor as in the EU.
the fact that the 80% of my teammates in battle, no matter the tier, have between 12-500 battles under their belts, indicates why WG doesn't give a ..... about old players.
New juicy victims mmmmm