Oppressive supports
Certain support/adc combos have as much CC as an entire team. With no tenacity items available early, you're basically stuck running away once they reach level 3 unless they do a ridiculous mistake.

Various combinations of these versus, say,
, if either laner gets initiated on the eternal cc-lock 2v1 begins. Once the CC duo gets ahead in gold, they can practically 2v3 and bully them to the inhibitor.
Anyhow, I was thinking maybe everyone should either have innate tenacity at low levels or many knock-ups/stuns should scale and be less potent on their initial skill point. It really sucks being completely outclassed in combat where your stuck for 10-15 minutes.