You guys wouldnt care about 5 sec initial timer on blacks, but how about a unit like Farne who absolutly needs her skill? She activates her skill 5 seconds later and it has 5 seconds longer resue time but she gets the trade to ignore MR which... is kinda great.
Grace hers is a little boring tbh. 30% more stats (230% compared to 200%), losing the insta skill use. I dont see that being necessary atm as her stats on skill already rape and tank everything. For now that is.