LFD "random" heroic problem

[Klesh]

The exact same thing am doing now too. Leveling a toon without discovering any dungeon entrances. But I can see it: The only possible instances will be DM, SFK and VP, but because some toons in the group already cleared SFK and VP, I'll be getting 49 out of 50 times DM... This system is as broken as tanks reforging most of their hit and expertise to mastery, cause threat isn't an issue for them. Or the "let me grab some ilvl 333+ CLOTH BoEs to be able to queue as TANK for heroics" mentality. Working as intended I guess.

As for the "Random" part of the LFD tool, I think it is random with the caveat that they do not have an infinite number of dungeon available and so once the popular dungeons are capped they start to throw up the unpopular ones.
So their code probably is an algorithm which states "check for dungeons with free slots, select based on random algorithm" , this would then drop all the full "popular" dungeons before picking the random dungeon and so obviously a lot of the "unpopular" dungeons would keep showing up when queuing in LFD.

Not at all. They seem to just check for completed heroics. Before I cleared VP I got that dungeon every 3rd queue or so (I still need 2 daggers from that stupid first boss). As soon as I've cleared that place, am not getting VP anymore.