One observation on my '16. I can't find neutral to save my life. Now I've been riding dirt bikes for almost 40 years (got my Honda MR50 when I was 5 ) so I know how to shift gears. Doesn't matter if it's running or off, hot or cold, it just doesn't want to go into neutral. Only have about 3 hours on it so far, so I'm thinking it just needs a while more to break in. My 2009 WR had about 20 hours on it when I bought it, and I never had a problem with neutral.
It does feel a little like the clutch isn't fully disengaging at full pull, so I'm going to look at adjusting it a bit to see if that helps. I saw from a quick search here on TT that is seems like a fairly common problem with the '11 - '15 model WRs as well, when they are new.
I was able to ride mine around for about 10 minutes last night, and noticed the same issue when trying to find neutral. I dont have as much riding experience as you, but i know my way around a bike.
My clutch seems to engage earlier than it should. I suppose mine needs adjustment as well. I'll be doing the first oil change tonight. Did you pull the screen when you did yours? Have you read about some sort of plug that you loosen after an oil change while the engine is running, and your supposed to loosen it until oil seeps out? Seems odd to me. Drain the oil, change the filter, clean the screen fill with the recommended capacity, and rip right?! I dont understand the point behind this drain orifice, unless it burps the system somehow?