It's an excellent explanation. Having played world of War craft for 10 years I'm very aware of the power creep issue and also how badly heavy handed nerf hammers can anger a gaming population. I was impressed when I first played Destiny to see the mmo elements but in a design that attempts to minimize and negate power creep. However, they need to learn a bit more finesse regarding the nerfing part... Games need to be balanced for sure, but most people absolutely hate the rules being turned upside down on a whim and having to readjust to the new way of doing things. People will always gravitate to what is most effective and powerful in a game like destiny. It feels very unfair when a player spends tons of time striving for a certain weapon or perk roll only to have it changed and rendered a joke in a patch. The solution? Get things balanced right the first time, and be very, very careful when you tweak game balance. When you drastically change a gamers experience in a game, you also risk removing everything they may have emotionally invested in the game as well, which makes it easy to just walk away and try something new.