Dragonlance....slowly I turned, step by step...
Do not get me started. While I cannot speak to 5e in any respect I can complain a lot about Dragonlance. Presently in preparation to run a DL campaign in D6 fantasy in fact.
Now first off it is a great setting truly, once you fill in the blanks (which it seems DL game products did a crap job of until the 3e line of stuff). It was always "wtf is in this spot of the map? government type? people? hello any of that?" compared to FR where the map and setting book pretty much give me a solid idea of what you will encounter and even who its working for no matter where you are.
The 3e material I think does a better job of answering those questions, the tales of the lance boxed set next, and I found the AD&D hardback the least useful in this regard. Basically DL draws a line between those who live behind walls and those who don't. People inside the walls may be flavored after every sort of culture or mish mash as the dm see's fit with the exception of a few cities and towns where such is established by novels, modules, or supplements. Those who live beyond the walls are considered barbarians by the walled folks, and here again you are given free reign to model them anyway you like, though at least two tribes in Abanasinia are modeled with native american thematics in some regards. So as ever the answer to "what is there on the map" is largely whatever you want to put there, barbarian tribes, petty kings, monster armies, all in whatever flavor you like. I intend for example for the Neraka region to thematically resemble mortal kombat for style and aesthetic. I think as far as portrayals vs player expectations that this particular aspect of DL is a little more forgiving than Forgotten Realms. Where DL fans expectations seem to center is on the novel characters and their deeds and less so on the setting that these characters are passing through.
Many long standing complaints about the setting get "cured" as it were by the end of the most advanced written part of the timeline (traumatized kender that are at least a different kind of annoying for example). Unfortunately the biggest DL fans (my available humanoids) don't want to play through the chaos war or the super mutant alien dragon overlords or even in the end point when its just unwritten chill and opportunity for sandbox but with bonus minotaurs. Oh no, that would be too fun you see. The war of the lance, by chemosh's barnacle encrusted bones, that's where you have to play. And don't you dare change the story, sir, or we spill mountain dew on purpose but pretend it's just because we are fat. Fat stubby little sausages, toppling all the things.
Great setting, great potential, a lot of room to make it your own, but I find the super-fans to be the hardest to run it for. I will most likely not be running the DL series of modules, those are actually IMHO pretty bad as far as modules go. Steel coins, this can give you fits. There are some good fan made explanations for it to make it make sense, I prefer the specially made chucky cheese trading token backed by the military might of Solamnia coupled with the superstition that coins with the king-priest of istar on them are cursed. But if you do xp for treasure you have to decide between shorting players on one end or the other, or making it known that the steel coin production began just after the cataclysm so there has been time for steel coins to make into treasure stockpiles in old ruins. The last one has the side effect of making pre-cataclysm ruins potentially less lucrative to delve unless a reasonable expectation of magic items is there to offset it.
Anyway back to your question; whatever they imprint or inject will likely not be felt by grog super-fans, as they refuse to move beyond that short period of novels they love so much and in which everything must be perfectly like the novels.
(proceeds to abuse players to death with novel-inflicted time table) heh, nothing personal kid.