I really enjoyed BLOPS 1 & 2, so I would confess being tempted. I haven't enjoyed a non-BLOPS CoD since CoD 4 and that was ages ago. (Bring back mod support!)
I would also say to SSingh75 that the hacking issue on PC vs console is a real issue, one which I feel is rarely talked about. However, the hackers are usually far worse on non-BLOPS games, such as AW. I got MW3 on Steam sale for like 5 bucks a few years back and just got it on the whim/for the lulz. Literally 50% of my games were littered with hackers. It was just a pointless experience.
I still play BLOPS 2 occassionally and it's rare to ever run into hackers - and I'm a PC only guy. So for this reason, I'd venture, if past is prologue, that BLOPS 3 will likely have far fewer cheaters than AW has now.
All of this being said, I'm guessing I won't buy BLOPS 3 for the simple reason that fall of 2015 is the FPS megafest. I'm already getting R6: Siege and Battlefront. This on top of my current favorites, CS and NS2. I even play BF4 from time to time since the devs are showering it with attention right now and fixing various aspects of it.
So that's 5 games within the next month or so. One game simply has to go for it to make sense and I guess that will be BLOPS 3. If the competition wasn't so stiff, I'd probably get it but right now it will fall to the wayside.
Another issue is that the scorestreaks(or whatever they are called) is something I never liked. CoD would be so much better off if they simply had the guts to remove them. Indirect killing isn't an CoD-only problem(mortars, UCAVs in BF for example) but in other games it's rare and non-gameplay wrecking. I do well in CoD but I still hate the steamstreaks. I want a cleaner experience(hence why we ought to have mod support again).
To be honest, I'm guessing the next CoD game will be WWII. But I want the next BLOPS game to be WWII. I'd rather wait yet another year and get BLOPS 4, WWII edition in 2017. This time with a much better/updated engine, hopefully.