@Tank2042Man
I have to disagree it hasn't "raised the skill level" it's changed the way you have to use a tank, basically you're just a mobile spawn-point/artillery not an aggressive front-line fighting tool anymore. Just as you say you can't use them to capture flags anymore like you used to be able to in prior Battlefield games, or you'll get instantly deleted.
It has turned tankers into base and flag campers just as you have described in Conquest. Unless you're playing with a bunch of window-lickers who are drooling onto their own chest a tank shouldn't be a problem for more than a minute right now.
In Breakthrough it's even worse, I rarely see tanks venturing out of their own base in Breakthrough, let alone being used to push anymore and the second they do the missiles and rockets start flying.
If you're aggressive with them, they're pretty much paper tigers, the upcoming addition of APS may change that, but I don't think so, frankly at this point I don't what to do to fix them.