This expansion adds some more interesting strategic decisions (which are, in my opinion, welcome) to the base game. The inns make the road scoring a more significant part of the game and I like the depth added by the giant meeple.
If you've explored the master set figure options thoroughly, this set offers some new options. The price is a bit high when compared to the price of the master set. As a classicist, my favorite figures are the Romans (although I wish each of the archers was a different sculpt).
Like "The Road to the Forgotten Forest," this expansion adds some needed "coverage" terrain to Heroscape. The Snow tiles are only one color -- perhaps they should have been white on a light blue background. The ice tiles and glaciers are excellent.
This is similar to Mallidon's prophecy in that it offers 4 new packs of figures. The price is somewhat high when compared to the terrain expansions and the base set. Try to get a hold of copies at the occasional TRU half price boardgame sales, if possible (that's closer to a fair price). I think the fact that you "have to" buy three packs of the Marro Drones to utilize their special power is absurd. Buy one pack and use their power to move other Marro figures in your army as someone has suggested on this site.
An interesting Heroscape expansion that adds quite a bit of different terrain as well as some new figures for little more than the cost of a new figure pack from one of the four-part figure expansions.
The splitter certainly adds a new level of tactical depth to the game but it can also highlight problems with the beam's inaccuracy after a few bounces. I probably need to play the base game more frequently in order to really appreciate this expansion fully.
The air rules are by no means necessary to enjoying Memoir 44. They are a little extra razzle-dazzle for the Memori fanatic who has everything. I happen to like the way the planes are handled but they do make a VERY simple game somewhat more complex. I am really getting to the point with all of my Memoir stuff where I need some way to keep track of the terrain hexes that is better than having them spread out through 5 different expansion boxes.
The extra terrain tiles are nice but this is a very high priced expansion with little payoff. The inclusion of only a handful of extra scenarios which don't even make full use of all the terrain tiles is particularly disappointing. This is far inferior to the Eastern Front expansion.
I feel that this expansion greatly adds to the main game by making the least chosen turn action siginificantly more attractive. The addition of several bonus cards encourages the drawing of extra tickets -- the aspect of the game that adds the most tension, fun and tactical depth to the gameplay. UPDATE: Further play has shown that the draw of certain expansion tickets may give players too large an advantage -- I will probably use it less frequently.