So much Africa + Arab peninsula + Eastern "russia"
It has seemed to me for some time that there is too much south west Africa & north east Russia in the EB/MM map.
I understand the difficulties of projection & Teleklos' projection comparison is pretty interesting :)

The solution that I would like to suggest is where the map is on an angle relative to the latitude/longitude grid.
This lets those pesky big blank bits be largely removed while still allowing the map to cover the important bits.
Overlaid on Teleklos' image it would look kinda like this: (except not messy & poorly done)

Of course there would be substantial (probably fatal ) difficulties in doing that & I can offer no help other than the idea