I'm quite taken with the idea of running a campaign that has only one session per level, and for that reason I was eager to try the "Embers of the Last War" mini-campaign, which follows this format. It was my first foray into DMing for 5th edition and I was hopeful that this set of adventures would provide a useful guide.
Having now come to the end, and run each of these adventures (plus a few of the "Encounters in Sharn" items as well), my thoughts are mixed. On a positive note, each of these adventures contains useful hints on running the scenario to highlight D&D's "pillars": exploration, combat, social interaction. Most (but not all) of the adventures contained useful battle maps, and the combat encounters were generally very well balanced.
The entire line of scenarios, however, doesn't really mesh well together to form a cohesive storyline. There are few recurring NPCs, and the "villains" of the entire path have limited interaction with the characters. My players came away with unresolved threads and plot holes that I had to work to fill. I get that this isn't one of the "hardback" adventures, so maybe I shouldn't have expected that - but it feels like a bit more effort could have been made to vary the types of scenarios and tie everything together with recurring NPCs and a sense of a progressing plot.
I'm not sure I would recommend this as a whole. Individual adventures, however, might be worth running and I'd encourage folks to review them on their own merits to pick what they like rather than buying the whole bundle.
[2 of 5 Stars!]