Originally posted this in the suggestions thread, but I'll also post it here for more to notice.
When selecting your Legendary Lord as the Greenskins, Azhag starts with units much more inferior to the ones of Grimgor Ironhide.
Azhag starts with Orc Big'uns, Goblin Spider Rider and Goblin Archer.
Grimgor starts with Black Orcs, Boar Boyz and the Doom Diver catapult.
Big'uns are good, but not much more than an Orc boy upgrade. Black Orcs however are the best Orc infantry unit, able to go toe-toe with all other infantry units in the game. The Big'un is thus compared to the Black orc, a mediocre choice.
The Goblin Spider Rider and Boar Boyz could be evenly matched. I haven't used the Spider Riders that much, but I haven't really noticed their effectiveness yet. Boar Boyz however are shock cavalry, and thus excellent with the Big'uns or Black Orcs.
Now comes the real shocker. Azhga gets the Goblin archer, Grimgor the Doom Diver. The latter is the highest of high end unit with extreme range and accuracy that in most games, kills at least 150 models; sometimes, often, more! In the meantime, the Goblin archer you can essentially recruit right from the start of the game, and even loses out to the Orc Arrer Boyz which you can get on turn two.
I suggest changing this up, to make Azhag more appealing.
Original thread: https://forums.totalwar.com/discussion/176214/azhag-crap-starting-units?new=1