First, thanks for taking the time to comment. I am genuinely interested in this topic and really want the community to discuss this or at least think about it.
You make a lot of points and I will try to stick to topic. I should start by re-stating that Meta picks are each there for a reason, this point I do not disagree with. Basically, this is mainly about the adoption of regional meta differences vs maintaining what works for us.
Going into worlds, Western regions abandoned a lot of what they were playing throughout LCS after they boot camped in Korea. They played into many of the Eastern regional meta picks rather than sticking to what they had been playing all season. There was no patched power-shift as seen in many meta shifts, it was strict adoption of Eastern flavor. I think this attributes to why we don't win, it's not the primary reason, but it still matters. You touched on supporting cast and practice schedules which, among so much more, are huge issues for Western teams too.
My opinion is obviously that innovative picks offer huge advantages if done properly. The risk you define as losing games, isn't really a long-term risk or a risk at all if you play normal/custom games. Once you do understand your kill combos, power spikes, damage potential, etc. the champion becomes that much stronger. The point about the longevity of the advantage and the possibility of just banning out any pick is very valid, but this should still be considered an advantage. If you are drawing bans on obscure things, then you open doors for other picks to fall throughout your team.
What I believe needs to happen is players need to make picks their own. Examples: Froggen's Anivia, Wickd's Irelia, Ball's Rumble, HotshotGG's Nidalee/LeBlanc, etc. These picks were/are feared even when they aren't in the meta. Additionally, when they aren't meta, you won't regularly encounter them and become less practiced against them or even worse don't even know how to play against them, which is the advantage. I think this is an under utilized strategy. Players seem content just playing what everyone else plays but it has been proven by so many that mastery of ANY champion can be useful. See players like DaBox, Annie Bot, Loli Lancer, Last Skarner NA, XoXXoX.
It can be seen in a few examples from this past season with Overpow on Morde or Keane on Hecarim Mid. Picks like these change the overall dynamic of the game. Things can happen that the players are no longer accustom to which again, is the advantage.
Disregarding other issues, I think this is a way for us to potentially win worlds but it will likely take community commitment to the idea of innovation.