Opinions on 71-80 leveling

[LianaThorne]

I appreciate all the answers but I kind of feel like my question still hasn't been directly answered fully.

What I'm more asking for (rather than the best way to level to 80) is what leveling methods provide you with the experience you need to perform your job the best?
Like, what content/route exposes you to situations you NEED to know how to handle as a tank before you hit 80. Any particular dungeons, trials, etc. Like I said, I'm concerned I've been putting too much effort into one leveling method and unintentionally been avoiding other things that I should experience to improve my overall knowledge in tanking.

Like, I can get to 80 in Zadnor in 2 days easily, I'm more concerned about what is the best route to take in general so that I'm able to go into like...extreme/savage content as a fresh 80 tank and be comfortable that I won't just drag my team down or be called a carry since I've had experience with the content/mechanics needed to perform my job the best I can from first pull. I would rather it take longer to level to 80 if I'm getting extra knowledge/job experience with another way compared to my normal.