I think Graal Classic iPhone is designed around 3 core aspects:
1. equal footing for all players
Graal Classic iPhone does something very few MMOS do; a new player is as equally powerful as an experienced one. This allows for new players to immediately step into fun activities rather than have to complete boring content to scale up to the highest level.
If a brand new player sparred someone with 3000 hours, the only factor affecting the outcome of the battle is the experience the old player has(and maybe lag xD)
adding heart quests eliminates this factor. I remember starting Unholy Nation a couple years back, I had to complete all the heart and sword quests to be able to be effective in any pking related event. I would be last picked for ctf or any captain based game. I don't want to see iClassic go this way, it's nice to be able to hop right into things.
2.Exploration
The world around you in Graal is constantly changing. In most MMO's you need to patch and have maintanence to change or add new things to a game, but Graal has a unique system that allows you to update the game without having to kick players out for a download. With this things can be added or removed as pleased. A town may seemingly pop out of nowhere, a house could show up that wasn't there an hour ago-you never know what you might find when you log into Graal. This is something that I've never seen in any online game created.
3.customization and role playing
Graal has the largest selection of customization graphics of any game, primarily because of the ability to upload your own. It also has very interactive environments as well as interactive items. Your character can dance, juggle, or even pull out a chair out of nowhere and sit on it. This is a much less chaotic version of what I liked about Unholy Nation-A myriad of items with unique purposes that were aquired and collected to entertain or suprise others. People will pretend to be various things or people, which is highly supported by the ability to differenciate your character from everyone else.