Pet peeve time!
I really wish that using a skin texture or similar mod wouldn't disable achievements. Those who mod their games heavily can install mods that allow achievements with mods. I believe there are other ways around this limitation if you just want the achievements and don't care whether they form a record of things you've actually tried and accomplished, but it seems to me the player who just wants to use a few mods is left without the choice to make minor adjustments without having to sacrifice the ability to earn achievements. I don't know what rules consoles enforce on their platforms, but on PC I'd prefer that players were allowed to earn achievements while sporting a modded hairstyle. Actually, given all the ways around the no-mods requirement, it seems to me to make the most sense just to stop requiring their absence altogether.
