Good point, but the answer lies in your post. They gave us the nade launcher because it sucks. If youve been here from the beginning you will know that each new thing they sell us (its very important to remember that we buy this shit) is a weaker version of what came before. Raid weapons went down hill to the point that they were not even worth the effort by the time kings fall came around. This has been their ONLY answer at providing new challenges. Skolas was the last boss that had some truly cool mechanics.

The grenade launcher does suck and YES!!!! Skolas was the last truly challenging boss in the game. (Challenges were just artificial difficulty)

It was a real bitch, even before they killed the burns. But it was cool, running around passing the green crap. And then the bombs.

Probably the most fun I had in Destiny. That took real cooperation and coordination. Followed closely by VOG.