Really cool stuff! The gryph chargers look ok'ish, but difficult to tell from the picture. Their axes seem very light compared to the stormcast.
The balistas look awesome. Must be awesome in gameplay as well(?) 36" range(?)
The general is cool although I still like the battlecat better so far.
The bases are definitely mixed. One can split the set with friends or if one has several armies.
i have just used one of the bases today for my stormcasts. They really frame characters nicely.