I've really enjoyed the Beta, more so than any since Advanced Warfare. I'm not sure if I'm buying it yet, though; while the gunplay is amazing, there are certain things about the franchise that irk me to no end. Insanely quick TTK, bad respawns (and being killed by a killstreak upon respawn), to name a couple. Also, while I feel like this game gets rid of a lot of previous games unnecessary fluff disguised as new features, the formula is simply tiresome.
Personally I wish they would have handled the futuristic games better; sci-fi elements open up creative potential that Advanced Warfare did pretty well with, and I really like crazy traversal games. Unfortunately, the "netcode" was terrible for that game and couldn't match up with the speed of the gameplay ending in tons of frustrating deaths. Some of the weapons in that game were incredible though, like the sound wave blast shotgun. Now we're back to standard weaponry, simple and neat...done very well, but at the cost of innovative ideas. It's been over 10 years since OG Modern Warfare blew up; I can't help but feel like more growth should have happened in that time. Not blaming anyone (except maybe Activision), but sometimes old franchises can't escape the past and become time-worn.