Sparknotes... /judge
I really enjoy Shyvana but she definitely requires sort of specific circumstances to do well... not something I'd play in ranked 5s or a tournament or whatever unless we were running a super specific comp(or probably even solo queue since it's tough to get the for-sure kills early game), but I think the way M5 was using her is just about perfect -- she's the fastest jungler in the game, one of the faster creepwave pushers, doesn't use an energy resource, and has great escapability, so she's great for the push solos hard + counterjungle thing they do, since she's always ready to go in unless she's low at HP and does it quickly and safely. The lack of a charge or hard cc(especially now that she cant slow people by breathing fire with red buff) hurts the jungle version a lot since it makes her ganks pretty pathetic, and the laner has some issues too in that she doesn't really offer anything another bruiser wouldn't to a team comp if you aren't playing a style that takes advantage of the pushing. I have a hard time justifying the pick over other top tier junglers... even stuff like Jarvan(who I've recently found to be incredibly fun but don't really feel effective enough at to feel good about picking when it matters) is a lot easier to pick kills up with.
Also I bought Sejuani when she came out and keep meaning to use her more but have had a hard time justifying whipping her out, since if I'm picking a ganker I'd rather just play Maokai or Skarner or something and I'm trying to get comfortable with some other champions in practice matches as it is... I noticed Dan Dinh has a couple rune pages for her, one that's arp/armor/as/lifesteal and one thats mpen/armor/cdr/spell vamp, kinda hoping I catch him streaming as her to get some idea of what I want to try to emulate. Looks like he's going Philos/HOG/mercs into shurelyas/frozen heart/sunfire most games...
EDIT: Also to comment on TSM vs M5... it's really interesting to me how that worked out for TSM(and SK before them) since it seems like everyone at home had figured out the way m5 should probably be approached but the teams at the event hadn't. I think to stop the way they play there's kinda four things teams needed to do: 1) pick strong laners who can push to limit the mobility of enemy laners 2) ward own jungle, react quickly 3) dont pick passive supports (soraka, namely) so that M5 cant let their support roam early 4) time own buffs and make sure you're ready to get back to them on time because m5 will be. I think TSM failed at all of those every game but game 2, and a lot of other things people are pointing at are parts of one of those things. Definitely agree with Dyrus that of TRM's often played champions Yorick would have been the best choice by far -- especially since it'd let him clone Chaox later and bot lane was the strongest lane for TSM every game of the tournament -- but I suspect a lot of the teams who can will start running double AP against them since they tend to be better pushers(though there's balance since they need the dueling ability as well). I'll be eager to see how the NA teams do after they talk a bit the next month as they prepare for the IEM finals... Saint sure didn't sound like he was going to fall for the same old tricks and I imagine once they chat and look back some TSM won't, either. I think what M5 does is really interesting as a metagame counter though -- laning is usually super passive(outside of sort of mid) because teams typically just try to win through superior mechanics the first 20 minutes and try to stay back to defend themselves from ganks, so instead of trying to outperform them at that, M5 just lets teams play that game and wins the game around them, getting as much as they can out of every time their lane is pushed. Even their roaming top lane thing is pretty interesting, since I think top lane is the weak spot of most of the top 5 or so teams right now(especially CLG and TSM).