To my eyes, Savage Worlds is a quick wargame, with attempted nods at any flavor at all, as far as the system goes. They can certainly dish out the sourcebooks, but all of that can easily be translated into any game system. Otherwise SW just always comes across as bland to me.
Mythras might be good, especially if you look at applications to handle politics or whatever you might want to add in, from the other modern Runequest 6 systems out there. Especially if you look at the ones where advancement is handled in something other than "make a roll, get a check, see if you improve end of adventure" way.
All that said, choose whatever gets your own fires going. If you are the source, you want the system and setting examples you work from to fire your imagination and get you to want to play and get others to play.