Nope it's not the same.
Some things are better. For example levelling.
Some things are worse. For example professions.
Some things are different, or didn't exist in the past.
But the fact they're so obsessed with "innovating", "game not becoming stale", change for the sake of change and claiming everything should be a gamble to be exciting is what makes me feel it's not the game I loved anymore. I don't like gambling. I like working towards a known, achievable goal. I don't like most classes and specs in the current, Legion iteration. And few specs I like are either considered crap or are expected to take talents that ruin what I like about that spec.
The expansions when I enjoyed several classes / specs and found playing them fun were first wotlk, then MOP.