Hats off to Icefrog for really nailing what is wrong with the game - the fact that competitive matches essentially ignore one lane. After fixing the drafts last year, this is was a giant issue, with the whack a mole at the start to limit how much gold and xp people can squeeze out of the jungle. I'd say that blocking pulls was almost more important than a first blood. Most of the hero changes seem almost forgettable, the only one that really surprised me was no major Furion change and Alchemist ulti nerf. The Bloodseeker rework is insane though.
2/1/2 will definitely be viable, Navi even ran it in some Starladder games, but was a bit more draft sensitive until now. 2/1/1/1 is also still there and aggressive trilanes won't die just yet.