answer:You already have a delete key. It’s at the upper right hand corner, and has a little x. You might not be able to get arrow keys without jailbreaking – this is the only way I could find to customize my iPad gen 1’s keyboard. See directions here. This is legal & reversable, and may allow you to maintain the keys across apps. There’s also an iTunes store app with left and right arrow keys, but it’s functionality is limited to intra-app use, and I wouldn’t guess that it works very well in general.