Are we going to do this every night?
WPA is not a garbage stat.
You're not going to read what I say, so I'll leave it at this: WPA is not measuring what you apparently want it to measure. It addresses "why did the team win? (or lose?)". Not "who had a good game?" There are plenty of other stats for the latter. Often the two forms of question line up; when they don't, there is insight to be had as to why not.