Tactics make up most of the fullness of the experience, so tactics.
It's not that I don't like strategy, or strategy games, but making that experience as good as it can be usually cannibalizes other things.
Strategy can be exceptionally one dimensional too, which is frequently overlooked. "Hit harder" is a completely viable and very common strategy/long term game plan.
Varied strategies are a lot more likely to divert people away from the actual gameplay, which then ends up getting them nerfed or reworked.
Like combining all of the available zoning tactics with the intent of starving an opponent, and leaving them weak all game. "Abuse my strength to make the opponent weak" is the strategy, hard all-ins and creep freezing/zoning are the tactics.
Or optimizing farm tactics with the intent of hitting a long term power spike without interacting with the opponent, then obliterating them. "Avoid my opponents strengths and peak faster than them" is the strategy, and timed jungle camp paths and mass wave catching + perfect CSing are the tactics.