IOS servers question

[i8bit]

I have been playing the different IOS servers such as Era, Zone and Classic.
It has came to my attention that all these servers are set up the same. You can view profile, location of buttons, such as the chat, and grab, etc. All the servers also seem to not have any public baddies. I don't know if this is because IOS servers can't handle it, or the creators wanted the players to thrive on player interactions only.

ALTHOUGH, of what I've seen with Delteria, it looks like they are breaking the graal barrier so props to them.

My team and I are in consideration of attempting to start an Iphone server.

Aside screen size and limitation of looping scripts, what is needed to keep in mind when developing for a mobile device? Because of what I've seen, all the servers are set up the same.