So, things I've noticed (that I care about, at least):
~Mewtwo and Waluigi Brando. Everything I've wanted and more.
~Pichu did get fixed a bit, which despite being one of my mains is actually nice to know. Makes things more challenging while still being completely broken.
~Ike still has not gotten No Sympathy Mode from MAX over to 4.0bc. Would be nice to again see people tremble in fear at just the mere moment I have Ike say "Prepare Yourself" after a fully charged Eruption. Speaking of, Eruption is amazing, but if it were to be something like Smash4's Furious Eruption (it's hitbox is asinine), the remainder of my imploded brains would be in my neighbors house. Either that, or 1) when in NSM, Ike gets a 3% damage increase every two seconds, and his Eruption will grow both in damage/knockback based on his own damage-provided he doesn't take damage to himself as he is in NSM; 2) Once Ike reaches a certain damage percentage, say %150, an Eruption will OHKO, but he will also SD-and before he does so, he shouts "Prepare Yourself". Again, brain implosions.
~Marth is unchanged, which is fine by me. Love the Famicom skins! Also, just to make things more asinine, give Marth the Iai Counter from Smash4. Mmmm, the butthurt will be so delicious (God, I'm evil).
~Wolf is unchanged, again, fine my me. Long live the U-Air strings!
~Fox had some much needed changes to him, and I am quite thankful for that.
I could say things about the other characters, but I'm not as knowledgeable for said characters. Anyways, great update! Will be glad to play the ever-loving sh*t out of this version of Brawl-.