If anyone says they're just cashing in, they haven't played TW:W. It's LOADED with content, some paid (Beastmen and Wood Elves mandatory and offer more than just a new race) and a lot free. I have 120 or more hours logged in the game and I haven't even played Empire, Wood Elves, Beastmen in the Grand Campaign, Brettonia, or any of the Greenskins factions. I don't play MP either.
Who plays Starcraft for the campaign? Those games lived on purely because of the MP while the Grand Campaign in TW games is always a huge selling point with different leaders and factions. TGC is much more replayable than past games because each faction plays completely different. I'm totally fine with a quick turnaround for TW:W2. When all three games are released, the map is going to be HUGE. Stoked.