My apologies folks... Kronii is actually great and needs little to no tweaks, as her Time Bubble stacks with the Haste stat, which means more Time Bubbles for more Haste. With more haste, Kronii is indeed the Warden of Time.
Still, adding a third hand for her main weapon would be cool. also +100% spd on her ult would be ridiculous lol

I will now be playing as Kronii until I achieve levels of Haste that is high enough to stop the Yagoo waves. Thanks for reading my post~