While this yomichan dictionary could certainly help, the user would still need to highlight each word themselves to determine whether (and where) it appears in WaniKani. Also, some of the information won’t be 100% correct since WK has added/moved stuff. Not sure whether @Kumirei intends to update this to reflect recent changes, since the differences are minor.
(Note: the same is also true about WK info on Jisho – e.g. 又 is now level 51) 
Seems like @skatefriday was requesting something more like this (removes furigana above words previously learned through WaniKani):