[Executor]

No. Not even a coordinated attack could have done much. Trust me, I've seen and fought through a lot of these situations and I've seen far worse nations than yours come out winner in all of them.

Let me explain and sum everything up;

Unlike any other player in the game you had a huge advatage by not having any wars at all until you attacked Midgard (due to all the AI nations (and at which point it was too late)).
You were the only water power on a map with no Rlyeh and a large amount of water provinces. Let's not mention the extra mobility this gained you on a rather choke point-y map.
You were also the far strongest player even without any wars and than especially due to that same reason (no needles expenses in gems and troops like the rest of us), being the leader in almost all categories from the start I believe.
I'm not trying to undermine your skills or effort, but there's something horribly wrong when a player reaches 50 provinces without fighting anyone, however skilled or talanted, on a map with some 16ish provinces per player.

Now, keep in mind the logistical problems the rest of us faced even if all united. Each of us could only attack a hand full of your provinces, at best, and even than there were a lot of choke point and dead ends, while you had the advantage of striking nearly any of us at any place with great mobility.

Also keep in mind that uniting every single nation is impossible under any scenario as you must well know, since at least some nation have bad blood between them. Even in the best of scenarios there is always at last someone will not only avoid the big war, but rather join the winning nation for some ludicrous reason (like ending second, or misguided belief they can stop you alone if they grab a chuck of your, now mutual, enemies, or they feel the game is lost, or revenge, etc).

Turn when you attacked Midgrad was the turn crucial turn. If Midgard, Pyth and myself had coordinated (without having to deal with internal problems) you could have been stopped, with a special emphasis on could.