The Good: The sense of mystery with unknown magic feels improved with the new system. My group failed to identify several items, so they had this anxious feeling the entire trip of transporting unknown magical artifacts with unknown powers.
It was really fun to find a wagon mini and fill it with barrels and boxes and chests and books!
The cargo and the horses being something to protect added an extra dynamic that really shaped the encounters. In most the fights the players first priority was to protect and not to attack, which made the encounters for more interesting.
The rhythm of the encounters allowed the players to make plans, then see those plans succeed. The rogue traveled 30 ft ahead of the wagon searching for traps. The Cleric drove the wagon while the Monk(a) walked with the horses to soothe them. The Barbarian and the Monk(b) traveled 20 ft behind the wagon keeping a lookout. And everyone got to see their plans succeed as the Rogue spotted traps, the Horse crew were in position to control/protect the horses, and the lookouts were able to give the team an initiative bonus while being in a favorable position for some of the fights.
The last fight felt intense! They were sure happy to have Kyra with several scrolls of healing. Poisons were fun to run and didn't bog down the game.
I was worried during prepping that this scenario would be punitive on the gold rewards, but by taking the mission seriously the group was able to protect all the cargo. (I did forget that the first roll of every encounter was downgraded and only remembered when we started the boss fight. That made the earlier encounters easier and may have saved them some rewards, but it did make the boss fight hard by ruining their alpha-strike.)
I'm really liking the new formatting. Having a separate encounter sheet is saving a pile of flipping between sheets, and it often has the room for me to write down extra notes during prep.
The Bad: It feels like there is still kinks in the formatting of the document to polish out.
A few times I found myself looking back and forth between the scenario and the encounter appendix trying to find a specific piece of information (for example: creature moral and tactics, or what was difficult terrain).
And there was a few points I got confused about scenario mechanics; What changes if someone claims the scale? And Schrodinger's ambush where the Centaur sets off the trap, unless they get spotted, then it was a different druid.
The Ugly: We had a frog-totem goblin barbarian. They rolled max damage against the frog swarm with the tongue attack. The frog swarm was not resistant to bludgeoning damage. So we got this mental image of the goblin with an oversized tongue licking up and swallowing most of a frog swarm.