Housing:
a way to design ur own house on the game others can see and visit, also players can design and expand their house, as well as have their sylesti be walking about in it. although, it may hav to be an option on what sylesti can b in the house, and depending on the houses size, how many, bc I see ppl who almost seem to have hundreds of sylesti, how will so many fit in one place!
now this part is just an idea but an extra to the housing can be you can walk around in it and talk kinda like a social mmo idea. have little get together and parties!

PVP: Players can battle, similar to gaiaonlines trade system, where they take turns and then wait for the other player to make a move, but it does not affect a pets health, exp, etc, outside the pvp. all tho something may have to be done about potions, maybe no potion at all, players r given a certain amount of pots, etc. altho if this is added in u may hav to make it an option so that arguments don't start.

Forum: more player friendly, have a search bar for things ppl r searching for and have a list of things ppl have posted in the forum so that they may back track to a post they have posted and see whats new, otherwise they may forget that threads name or cant find it and miss some important stuff.