Six sectors... I guess it is a small world.
Yeah, there should be more choices and sectors. Only one win needed, by there are a LOT.
Different factions, and you can make your own.
Neutral territories where you could set up new factions.
Alliances/rivalries between factions.
A meter to measure a faction's power and how "honorable" they are. Power meter starts at 1/x, where x is the total number of territories. Honor meter starts at 100 at goes down based on when factions betray allies or if a superpower attacks a minor power. (in other words, if a faction with 50 territories attacks a faction with 1 territory, the guys with 50 places would lose reputation.)
I doubt this is possible, but a special world domination palette so the factions can set up their own colors. (Three different shades of one color, one shade per player. SO, if somebody had orange, p1 would be orange, p2 would be bright orange, and p3 would be dark orange.) But yeah, I doubt that'd work.
Maybe even special WD-only maps with fixed player settings where the attackers start with more supplies and vecs but the defenders have more defences and larger bases.