Kindred; Consistency and Snow-ball Prevention (Change)
Kindred needs a consistency to her passive- because right now it is too reliant on snowballing to get stacks and she is useless without them, so useless when behind.
My suggestion is something like lower the per stack damage to +1% from +1.25%; and you gain an additional effect to grant +1 stack per 300 seconds (5 minutes) so you can get stacks even when behind, and can tone back her snowballing potential when she gets ahead.