Cap'n Kobold
Hero
There is a fair amount lot of exploration in many AL league (and other published adventures).I've read this thread, and I am baffled what game you guys are playing.
I've played in adventurers league for quite a while, and at least two private games with sometimes three games, for a decade. I have over a decade of experience with 5e both as a player and DM, in person and online, playing from the early playtest to today. I've played a very meaningful portion of the published WOTC adventures, including DDAL adventures.
The idea that the published adventures don't include exploration as a very meaningful aspect is sheer, utter and complete nonsense!
The idea they don't include traps, climbing things, picking locks. sneaking, and all the things Rogues do well is sheer, utter and complete nonsense!
The published adventures are not hack fests which are almost entirely about combat and set pieces. In fact, relative to the edition which came before (and arguably the edition which came before that), 5e published adventures have less combat and fewer set pieces.
So, what the heck have you guys been playing? Or, I think more likely, what nonsense have you been reading about the published adventures which led you to draw the false conclusions you drew about those adventures you didn't play or read beyond a very small skewed sample?
Unfortunately, particularly in AL play, there are other factors: Because the modules are designed to fit into a 2- or 4-hour slot, there generally are only a few combats and a few exploration encounters/opportunities.
The Rogue's ability to apply an ability check to many occasions, or consistent at-will damage continuously is less useful compared to classes that have resources to spend, and less limits on doing so.
In AL particularly, there is also less "party consideration" compared to a more long-running campaign, which can mean that there isn't a gap left for a rogue's niche. (Although that can apply to many characters.)