Starting out: it looks cool. Size doesnt seem to be that big of an issue for 3v3+ type games. Just eyeballing it at around 500-600 territories total, that shouldnt be prohibitive. Think that popular Game of Thrones map, but a little smaller. But since repeated compliments for what looks like a fairly interesting map would get boring, I'll go on with just a few thoughts on it.
The (-2) design for the bonuses will make it a little slower, thus essentially extending the map size for better or worse. Such a uniform application of (-2) may also end up a little boring (tough to keep a good balance and keep it interesting at the same time, but a few variations, even if it's used fairly sparingly to boost the messy middle might help?).
The Lunatic is OP currently. At the moment, whoever gets that starting point seems to have a MASSIVE edge on the opponents, particularly with the universal (-2). Sure things like this can be counterbalanced by a different number of picks being granted, but generally a player is given 3-5 picks, whether auto or manual. Is there a specific position you would *always* want your picks to be? And if not would it be a huge disadvantage? Indicates imbalance, if so. Some areas are much easier to defend than others, and that's okay, but the overall layout of the level gives natural benefits to certain easily defended areas already. Try to counterbalance it out to take the map shape into account (Think Italy in RoR. Some very lovely bonuses, but at the cost of being very hard to defend and difficult to quickly/quietly take. UK isnt a very strong bonus, but its positioning is gorgeous and it's fast to take--balancing it out to make it one of the more favorable superbonuses. Each of the superbonuses has some big territories, some small, but the naturally defensible ones are typically less powerful, at least until you take a neighboring superbonus to balance it out, and this is a good thing.)
In practice: Northern Coastal Forests has 5-5-3-1 (yikes) and has 11 potential fronts and 8 defense points. It also has two parts isolated by a secondary superbonus, and no current means of connecting them. Yukon Tundra has 3-3-2, far faster capturing, and the same superbonus value (4) while having 7 potential fronts and 6 defense, plus bordering the already gorgeous Coastal Icefields. Coastal Tundra can punt NCF around too. As the field grows wider, the balance inherently is going to stretch a little thinner. Sometimes you can counterbalance this by introducing super-super bonuses, but it's delicate.
Lastly, variance in movement. You have some nice bottlenecks etc, but as you get to the broader parts of the map it looks like it could get rather monotonous if it's so many large bonuses with so many fronts. Will just be a cascade from one tip or the other. No way to really tell yet, you've not drawn that in, but just be aware. Maps like large USA are agonizingly repetitious and have to be *HUGE* to work. Again I'd point out the Song of Fire and Ice map--it's big, but there are a load of natural features put in it to break it up.
Also: something is odd about the coloration on the unnamed territory above Skagway. Overlapping superbonuses and bonuses is cool, but the actual border coloring is wonky.
Cheers to the good looking map! And for Alaska. Should be interesting