I like the idea of some base cd reduction, but at the same time, I think she should probably have a craving for CDR. And that Mantra-Q? That thing is crazy. Her kit without mantra, atm, is decent. So without mantra, she is now a solid support/mid without an ult (obviously a big downside). But where old mantra didn't even feel as satisfying to use, IMO,because of how they were used and the odd requirements to use them fully, when I tried her at some point, the newer mantra bonuses are insane (the big upshot). So I think I'm against 2 charges, unless Q gets hit hard. Because 2 of the 1.5 ration, almost 1000 base damage Q in 3 seconds, with her still keeping stuff up after the fact would be a bit much I think. Especially considering the additional proposal to lower R CD to below 27 with max CDR. IE: Up every fight, even when used between fights. I just like having the one charge better, though. Very satisfying to use, though I think I want her as a mid overall, for perspective.
TL;DR-I could see the benefit of two charges, though I also like having the one insane charge. Basically, red bars are nice to see.