I-16 would be very welcome in EW, imho
Yeah. Now you need an early war Soviet fighter, at least for Brewster Events. Most of all since the Brewster probably isn't going to end up all that popular on its own. If its paired up with the Soviet fighters it actually fought in history then the whole thing should bring more players at least into EWA and maybe the MWA.
Special events where the Brewster fights its actual opponents would be a lot of fun. Which means AH has some modeling to do. The I-16 would be a good start. I suspect buzzing around in that would attract a following.
Personally I wish we had every airplane that ever saw combat in the war and twice the Historical events. Pretty much the only missions I fly in LWA are the Historically accurate ones.