Took me a while to finish my first campaign, but I can say it just clicked for me in a way XCOM2 never did.
My biggest gripe with XCOM2 is that everything runs on countdowns which eventually put me off so much that I've never finished a campaign on that one.
In PP however, countdowns are used sparingly and make more sense.

The free aiming system, which some people dismiss as 'gimmick', is quite fun to use and has its uses beyond the 'cover as large an area as possible on the bad guy'. E.g if an enemy has no means to hurt you anymore, he's basically taken off the board. So if someone has just a 2-handed weapon and you shoot off one of his arms (or destroy the weapon), he's no threat anymore.
It also gives more immersive feedback on your hitchance than a simple number; and since a lot of the weapons fire in bursts and each projectile is rolled seperately, it doesn't need to artificially roll a 'glance' or similar for you, you just hit with 3 out of 6 bullets on a bad shot and that's it.

The 7 classes can be combined into 21 different 'cross-classes' (since Sniper/Heavy is the same as Heavy/Sniper) and while some combinations are more obvious than others, each ability has at the very least their niche where it comes handy. Each person also has up to 3 random perks which can make a difference in what class-combination and what combat role they'd be best suited for.
Mutations and augments add additional variety and further abilities - I was quite surprised how much room for theorycrafting and experimentation is in this game.

However, the UI is adequate at best:
- there are no standard gear layouts or 'unequip all' buttons
- the manufacture and equip screens lack sorting options (the default order of items is just a mess) ...
- ... and are using not enough space on the screen which leads to way too much scrolling, especially if you don't know exactly what you're looking for while you haven't memorized the names or looks of items (and even if you know the names, there's no search function).

All in all, 'twas fun and well worth the time.

Took me a while to finish my first campaign, but I can say it just clicked for me in a way XCOM2 never did. My biggest gripe with XCOM2 is that everything runs on countdowns which eventually put me off so much that I've never finished a campaign on that one. In PP however, countdowns are used sparingly and make more sense. The free aiming system, which some people dismiss as 'gimmick', is quite fun to use and has its uses beyond the 'cover as large an area as possible on the bad guy'. E.g if an enemy has no means to hurt you anymore, he's basically taken off the board. So if someone has just a 2-handed weapon and you shoot off one of his arms (or destroy the weapon), he's no threat anymore. It also gives more immersive feedback on your hitchance than a simple number; and since a lot of the weapons fire in bursts and each projectile is rolled seperately, it doesn't need to artificially roll a 'glance' or similar for you, you just hit with 3 out of 6 bullets on a bad shot and that's it. The 7 classes can be combined into 21 different 'cross-classes' (since Sniper/Heavy is the same as Heavy/Sniper) and while some combinations are more obvious than others, each ability has at the very least their niche where it comes handy. Each person also has up to 3 random perks which can make a difference in what class-combination and what combat role they'd be best suited for. Mutations and augments add additional variety and further abilities - I was quite surprised how much room for theorycrafting and experimentation is in this game. However, the UI is adequate at best: - there are no standard gear layouts or 'unequip all' buttons - the manufacture and equip screens lack sorting options (the default order of items is just a mess) ... - ... and are using not enough space on the screen which leads to way too much scrolling, especially if you don't know exactly what you're looking for while you haven't memorized the names or looks of items (and even if you know the names, there's no search function). All in all, 'twas fun and well worth the time.