I'll preface this by saying I've enjoyed the game so far.
Borderlands is the standard for console looters for me. The loot in that game was so damn fun when combined with the skill trees. Damage multipliers, crazy effects, odd glitches, and just plain strange. My concern is that there is might be little room for experimentation with the loot pool, and that it will all be superficial. There might not be a gazillion guns in BL2, but there is quite the broad range. Throw in class mods, shields, relics and combinations of characters and you had a ton of possibilities.
With Destiny I am seeing everyone at level 20 within a day or two, playing through repetitive waves of enemies to grind for enough space bucks for a loading screen starship, cape or banner for your gamer tag? The smaller than expected world size is just another thing that makes me scratch my head.
What I find myself thinking is that I can't wait for next gen Borderlands. Hopefully there is something to this game that I am not seeing.