Admitted its a good list, but unless you go Undivided it has its restrictions.
My ideas go along the lines of:
God-specific armies get extra troop types, and possible unit upgrades that Undivided armies can't take (they have choice to make up), eg.
Khorne army can upgrade one unit of Bloodletters to Bloodhowlers; +1 A, 5+ AS (4+ in combat), no Frenzy (quell Frenzy?
plus most people see problems with the Greater Daemons, especially the Bloodthirster, who has to moonwalk or else fear units of Goblins....