I'm not an expert, nor do I work at PreSonus, but I believe that the reason is that the devices are so small. Although I don't believe full support will be available, I do believe it would be nice of PreSonus to release a smaller version with smaller capabilities to actually look nice on iPhone/iPod Touch. I understand PreSonus, but I get what you're wanting. So maybe a compromise PreSonus? I have an iPad Mini and use the remote, and just got a FaderPort, but it would be nice to have another capability to keep my mixing and stuff hands on. I am a hands on person. So yeah PreSonus, please.
I took this next part from another user, but it's helpful, so yeah.
Thank you for the feature request.
If anyone else agrees or disagrees, then please vote it up, or down.
To vote:
In agreement click on the little blue triangle pointing up.
In disagreement click on the little blue triangle pointing down.
The developers pay close attention to those that are voted on the most.
You are allowed one vote.
Just viewing and agreeing but not clicking on the vote does not help the issue.
Please c lick on one or the other.