It wants you to buy some exotics from previous releases that you don't have.
Yeah, but this is annoying if you don't want to, as it just keeps flashing at you.
I remember the most annoying thing about these expansions though. I started at light level 1050, most of the quests/mobs are 1060, so it's hard, but fine. Then SUDDENLY, all the quests are 1100 light level. So you need to needlessly grind in order to progress through the main story. Such a stupid system.
I know you can gear up quite quickly, but I shouldn't need to needlessly grind to go through the storyline.