Initiative is a really important detail to all ranked matches, it was great to see this highlighted. This will be very helpful in the future.
The only thing that remains in question is the team coordination. In the last stretch (the last thirty seconds, excluding overtime), teams and players seem to be rather mixed up.
I've noticed that in certain matches, the other team will tackle the objective (mostly tower control and rainmaker), and attempt to make a really far stretch to take the lead in the last second. I've seen these attempts succeed and fail in turn, but I've noticed that many players lack the knowing of when to simply leave the tower or rainmaker be, and attack those who take it up.
However, I know less than players at a higher level. Simply an A talking, here. Great guide—I'll be taking this into great consideration during the next ranked battle.