Nature Structures

The Order's spells on level 5 are as weak as Chaos'. Life has the best level 5 spells; all of them are good. Nature and Death are average.

I disagree. I think Hypnosis and Mass Dispel are not weak spells. For example, if Life casts a spell, Order can immediately take everything. Maybe it's because you haven't been playing as Order lately. Chaos also has good spells like Disintegration and something else I don't remember, as I haven't played as them in a while. In general, I think that level 5 spells are excellent for all factions; there are no bad or average spells, and they are tailored to the specifics of each faction.

I was talking about Phoenixes, not in the case of the Sniper, as the post mentions this...
This expansion came out after the first version of the fourth game, and Winds of War came out after the expansion... I don't understand why you would put the expansion on top of Winds of War???

The expansion should be installed in any case, as Winds of War doesn't add anything particularly new. It's just a cosmetic update. But the expansion is still a good "mod" update. Of course, it's not a high-end update from the developers, but it's still better than nothing. :))