New Tournament Format Idea
Instead of a best of 3 on Summoner's Rift, make it a points based format There could be 5 1v1 matches worth 1 pt each on a modified Howling Abyss map, the nexus could look like the world cup. Followed by a single SR match worth 3 pts. And in case of 4-4 ties, a Death Match on the modified HA map, with all 5 players start at level 18 max gold to buy full build, but no revives. Once dead, you stay dead. Game ends when all 5 players on one side dies, or the Nexus is broken. The only real problem would be a 5/0 sweep, but this can be solved by moving the final single match to after the SR team fight (only in the case of 4-0 sweeps though).
Line-ups for the 1v1 matches must be the same players as the SR team, only allowing 1 or 2 substitutes (This is to limit team sizes to 5-7)
And there should be seeded teams, such as the 4 teams that made it to the semi finals don't have to go through prelims (this gives incentive past just "being number one" and team recognition)
Other ideas would be a knockout system for the 1v1 matches, where the winner continues to play, (maybe even going 1 v 5). The pts balancing would become a bit awkward though.
Basically, just throwing out some ideas, League doesn't have to be this rigid Summoner's Rift snooze-fest every year, changing the format could bring some new life into Worlds and tournaments, the 1v1 matches could become pretty hype.