Tristana's E interaction with crit
So i checked the PBE patch notes and it noted that Trist's E, Explosive Charge's active damage now scales with 75% of her Crit Change. Is this a flat damage increase? (As in if i have 55% crit chance from IE/PD each stack deals 41, 25 extra damage) Or is it a multiplicative one? (Assuming again 55% crit chance from IE/PD that the total damage is increased in 41,25%). If a Rioter could answer that, that would be awesome.
Also in one of your massive Q&A a few months back a few Rioters mentioned in a conversation to one of my question how you guys had a plan to create interactions in ADC's kits with Critical Strike mechanics and i'm wondering if these Trist changes are perhaps a dry run at that goal. Again if a Rioter could respond to this, i would be so very, very happy.