I'm just curious, how would you approach these outposts while playing as the High Elves?
The High Elves have good blue-colored ranged units, but I think it would still be difficult without magic.
And if we're going to approach it that way, then for the sake of a clean experiment, we should try playing as the Barbarians (they are generally averse to magic).
I'll find some time to play and write about it later ;)