Saw this last night and loved every minute of it. I managed to avoid almost all the spoilers so things like Blade, Gambit, Flame on, etc. were all surprising for me. A couple of things I haven't seen mentioned so far
-Ryan Reynolds and Blake Lively's kids play Kidpool and Baby pool
-Paul Mullins plays Welsh pool. Mullins is the lead striker for Wrexham, the football club Reynolds co owns with Rob Rob McElhenney
-The secret wars comic on the ground when Deadpool first ends up in the void.
-I was actually reading the credits and in the special thanks section they list "Truthful Timmy the Blowjob Queen of Saskatoon".
Also having dealt with Disney on the business side of things in the past, a lot of the jabs at them really hit home and made me laugh.