I would like to have a World map with more details. The worldmap is now so small (just 10MB), it should be no problem to have a size of 100-500MB for the new devices we have.
Better world base map
With a vector map of about 200 MB you can deliver a high quality overview feature up to about zoom level 10 (see your competitor OsmAnd). Today Locus is slow and cumbersome at this level.
Is that relevant ? Well, I sense Locus is proud to be used around the world (trips in South America, through Iran etc.
And I consider it healthy to have a horizon beyond "How do I squeeze another milli-second in the next lap, to the next turn and alike ..." (I loved your remark, gynta !)
So: the proposal is to create a quality world map - and to give the user control when to switch from world map to detail vector map. (There are people who would trade detail for speed even at level 12, i.e. simply magnify, even without more detail from world map.)