I did play on easy, yes. It took me longer than for example Thrawn's Revenge or Republic at War in similar maps. I think difficulty was OK - for easy. In Thrawns Revenge for example, one you got the executor, you sweep the map and its over for the enemy. In Alliance, I had real brutal Superlaser fleets in the end only.
It's harder than NJO, that was a breeze.
It's way easier than AOTR - that mod is too brutal.
But I also watched a video of you where you instantly raid all planets that are empty and get 100k that way right at the beginning. Without being able to do that, it would be way harder. The same applies when you loose 30 planets when Dark Empire starts - I just retook them with the land units that were on the planet.
a few things I thought:
I lost maybe one Star Destroyer, these things shred all Mon Cal cruisers. Lost plenty of Lancers when I wasnt careful.
I wasn't attacked on the ground more than maybe 3x. Twice at Endor.
I had no chance at the mission where Rogue Squad attacks a planet - forgot which one. They were invulnerable. Luckily I could move on without winning.
I lost few land units, most against those brutal ATATs *forgot which ones - those with the green lasers) on Ylesia/Nal Hutta/Hapes.
Fighter bases on land are awful - I thought it would be better if they just spawned like maybe 3x. They were awful for the enemy too as I just rushed their spawn with fighters.
There's a rebel hovertank, big, that's insanely hard to kill
To killl Luke in his X-Wing, I needed to blast him with a super laser
The Death Star ain't that great, somehow the wayfinding is off - if Rebel ships fly to the center, often Lancers dont arrive there or your own fighters. So I lost the DS too once and never used it again.
Fighter balance is good - if you don't bring Lancers, they'll kill your destroyers.
There's some missile MC40, insanely strong, blew all my lancers + fighters away.
So in short - I think difficulty is fine, it's not like you can slap them down instantly. Just gotta get to the tech level where u can build ATATs,Tie Avengers , Engineers and Lancers.
In the Yevetha campaign, I lost within 10 minutes, had no chance and no idea, but I only tried that quick.
A few things I've noted:
If you use Boba Fett to Kill a hero, he disappears afterwards (tax collector)
If you use the galaxy gun, it disappears too
Some space structures have an insanely fast shield recharge, you need 4 destroyers at maximum fire for a build pad or a fighter base.
I had only one Space Crash, but Coruscant/Mon Cal/Corellia and I think Bakura often or always crash when I scroll to the top right corner.
If you got more than one Space hero with reinforcement power (like Thrawn 1), it only works for one