1) Gale Wings is actually awesome if you build a team around it. With hazard up you are guaranteed to win speed ties against imposters, and you may totally play around priority yes and priority no to fuck with Dazzling. Of course to kill Chansey you have to be at +6 (+3 if it switches in) and be M-Ray (and be deinvested in your own spdef), but look at this.
+6 252+ SpA Sky Plate Rayquaza-Mega Oblivion Wing vs. 252 HP / 0- SpD Eviolite Rayquaza-Mega: 654-769 (92.8 - 109.2%) -- guaranteed OHKO after 1 layer of Spikes
You can give up sky plate to something else if you run 3 IVs on spdef; you'll accomplish the same OHKO.
2) Aerilate doesn't work that way, it changes normal moves to flying and only these moves get the 1.2 boost (1.3 in gen VI). Chatter gets nothing from that ability.
3) Spectral Thief.
4) Agree, but has limited usage being the only decent users Zekrom, Groudon (for imposterproof reasons) and Xurkitree (never seen actually but its Boomburst hurts like hell).
5) Never seen that ability in BH, and it only works when you are confused, which doesn't happen often right now, except no guard dynamic punches (and it ignores missing chances anyway so the ability does nothing in practice now).
6) Let's not forget Yveltal or Lugia as bulky users.
Chatter is now less broken only because confusion has 33% chance of hurting you. I mean it's awesome to see Deoxys-A committing suicide after a shell smash, but it's very annoying because 1/3 times you lose your turn. Not even Shedinja is a check, as it will fall even with lum berry+recycle eventually.
