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What I've seen a lot of people doing is get Trailblazer for increased clear speed early game and then Stalker later on for better ganking. On champs like Lee though I prefer getting Stalker's right off the bat to utilize his early-game power.
Also, since they increased the price of tier 2...
It looks like DJ Sona is confirmed as the next ultimate skin based on the info Riot released (even though it was expected)... I'm not a huge fan, but maybe it'll turn out well.
I think this was because Alakazam' base form got 10 more base SpDef this gen. It's still kinda weird that they counted that as part of the Mega form's buff though. I know in the past there was an interview where they said there was a chance that Mega abilities and stats may be tinkered with...
Azu doesn't appreciate switching in on Scalds, which most bulky waters and Keldeo tend to carry. Something like Rotom-W, Clefable, Lati, etc. would work better.
Apparently the interview in which Sakurai said there won't be anymore patches was slightly mistranslated. According to what I read on Reddit, his comment was more along the lines of "we haven't made any future plans for patches." So there's still hope!
You'll probably want to have a perfect speed IV anyway so you can speed tie (or even creep) other base 50s. In addition, for trading purposes, 31 Speed would make it way more valuable.
I'd personally slash Wild Charge first so you can nail Skarmory, who otherwise walls you, as well as OHKO Gengar after rocks. Knock Off offers nice utility, but Wild Charge is definitely the superior coverage option.