I don't like the option to buy mats as I thought it was a good way to determine who is a real mmo / grinder type player, you might come across a lvl 28 with all the best kit but very few upgrades. This tells you more likely than not that they just got a lucky drop an they're not willing to do the grind that's necessary in mmo / rpg games. Don't get me wrong I will definitely be purchasing them from now on as I'd be a fool to farm when no one else will be but it shows that the game is trying to keep COD esque ' players happy as apposed to the gamers who live for the grind, which in all fairness are probably the people who are more likely to play the game for longer.