Hero Talents in Future Expansions

Kaylriene has some thoughts on the future of Hero Talents:

The pros are that Hero Talents add fun customization that is a decent flavor without requiring relearning a spec and that they are powerful – the stated design intent is that they can and should be near 33% of your overall throughput, which is a very-potent 10 points to spend. The cons are that they just aren’t flavorful enough, they’re largely passive bonuses that take agency out of your hands, and oh yeah – it’s WoW and mathematically you have a top pick for every spec and every mode of play that’s already mathed out and written up on Wowhead guides, Icy Veins, and the class Discords. My longer-term wait-and-see con for them is that they also feel like a trap that is going to be designed around in just one expansion – by using this solution, Blizzard has functionally trapped themselves to either expanding the Hero Talent trees for a couple of expansions until they’re as big as the class and spec trees or pruning them down and making the big marquee rollout of them a bit of a waste, and neither of these is a particularly good outcome. I hope there’s a secret third option and that Blizzard has already identified this as a priority.

I was thinking about the future of Hero Talents in new expansions, and I do think there's a third path. Blizzard could completely replace the 3 current Hero archetypes with 3 new ones. So in The War Within, you're a Templar Retribution paladin. In the next expansion, you can be a Crusader Retribution paladin that focuses on an entirely new mechanic.

Then in a couple of expansions, maybe they can bring back popular and successful archetypes, mixed in with new ones.

That way it becomes an evergreen system, but bounded at the same time. Each spec only has access to two Hero archetypes, but the archetypes change from expansion to expansion. Each archetype focuses on a specific ability, the way they do now, but remains at 10 points, and you get 1 point per level in the new expansion. 

The core class and specialization remain consistent with the standard tweaks and tuning, while the changing Hero archetypes would provide the radical changes which people like to see.