We tried to make our own 5v5 team with friends, but because we are 2 bronze, 2 silver and 1 diamond, we got placed against full diamond teams. Well, it's not that bad, because after little talk to some of them in after-game lobby, they said that they had a very long losing streaks . So, i don't really know.
Also, from 3v3 perspective, the Yoricks ghools give you 5+3 gold now. I doubt riots thought about it when they did this, and Yorick won't be picked soon. Also, nerfing Wukong passive to the ground is way too much for 3v3 IMO. And they did wrong thing to "nerf" his ult cooldown, because, from my experience, i use my (Wu) ult only in chokes when fighting 3vX, so, having 10 seocnds more CD on level 3 ult (when enemy respawns like 50 seconds, and usually, one ace at level 16 with two survivors from your team makes a game) makes no difference. They should nerf his mana costs (mana regen in 3v3 map is buffed, that's why Wu is that strong here, he can poke enemy like twice as much), or mana regen, but not cooldowns.