I haven't purchased it, normally with Call of Duty games I buy the previous year's iteration which gets a heavy discount.
I only play the single player content and the offline split screen when I have visitors.
The latest version appears to have no single player so I've had no interest in it.
As with many online games these days, keep an eye out for updates as over the next few months. The developers will be tweaking and making changing according to the feedback from the community which should improve the current experience.
What do you find wrong with the gameplay?