Problem is, i don't think many people are really concerned with alduin. He's not very impressive aesthetically; compare that to the daedric prince (whatshisname) in oblivion, and all the prominent oblivion gates popping out all over tamriel. The daedric prince's avatar was humongous in the imperial city, so everyone was like ZOMG ITS THE END OF THE WORLD while in skyrim, alduin is flitting about reviving his dragon pals, and everyone's more concerned with the civil war; the dragons seem more of a nuisance or something

Also, killing alduin was in sovngarde, and the beings there can't really spread the message to the living world eh?
