Lucid being on a shorter cool down with lower potency is also contributing to mana issues. Requiring 2ogcd slots, every 2 minutes instead of 1.
If used on cooldown, Lucid has greater total potency now with its 60s cooldown than it did with its 120s cooldown (cooldown was cut in half but potency was cut by less than half) so no, that's not the issue here.

What's far more likely to be the issue is players forgetting to use it. And let's be honest here; you don't have an off-gcd to weave inbetween EVERY pair of gcds, so that isn't the issue either.