Warlock talent trees, in a lot of ways, are what I wish other classes had

I feel like all three specs are currently laid out in a good way, and there are lots of choice nodes that allow for passive power vs. active power. For example, the choice between Mayhem and Havoc for Destruction is exactly the kind of thing I love to see.

Agreed.

Now I wish they’d do the same with Implosion, especially since in the TWW tree its at the top and mandatory.

Lame. I dislike mandatory abilities like that.