You know, I don't actually see that many dodges in my Normals. Do you know why? It's very simple: I fill most of my games. The two most likely reasons for me to dodge are troll picks (as mentioned above) or people who are hostile in chat. Now for ranked I understand strategic dodging, and don't have a problem with it, but honestly there is already too many punishments for people who find themselves on a team they can't win with, or get along with. Honestly, I rather just have the dodge penalty only be 5m time out between queueing up again (without the scaling penalties or LPQ nonsense) since there are so many instances where a dodge could be warranted.
On the other hand, I think Leavers/Rage-quitters are a much more serious issue, and it's completely unfair to that person's teammates to lose LP for something that they have no control over. What I would rather have instead is something along these lines:
-Leaver loses TRIPLE LP, regardless if the team wins/loses.
-The rest of the team can leave before 10 minutes with Loss Forgiven.
-The rest of the team gains triple LP if they win the 4v5, unless there's a Leaver on the enemy team.
-Leavers in both Ranked and Normals get a 2 hour timeout before they can queue again (1st and 2nd game offense), get LeaverBuster warning if they do it more than twice within 30 games (3rd game), and LeaverBuster actioned if repeated after the warning (4th+ game).
Now, I know that last point can be punishing for people who get disconnected and isn't their fault, but a queue timeout is gentle in the sense that it doesn't action your account with suspensions, warnings, bans, etc. Continuing to queue when your connection is unreliable warrants the warning, because even when it's not your fault, it's still ruining the game for 9 other people. Continuing after that is deliberately toxic behavior (chronic leavers). What this averages out to is getting a "free" Leave about every 15 games to account for issues beyond your control, or if you do get that rare team that you absolutely cannot continue the game with--but still forces you to take a break before returning to the game.
I also want to point out that the option to Reconnect would still exist, so if it's just an interruption in your connection, you shouldn't get penalized if you rejoin and finish the game.
This should also carry the option on Riot's end to disable the Leaver lockout timer during server issues or maintenance, because players shouldn't be punished for that either.
Anyway... just my opinion, ofc.