2. On iPhone app – slide between two sections of preset window instead of navigating through the arrows. (you can add 2 circles to show that there is more – like in the iPhone main app screen).
After removing the arrows you can add better menu for save/edit/etc.
Do you mean on this screen? http://ftp.eventide.com/ljdl/H9/screenshots/iphone_algorithm_control.png
This screen used to respond to swipe gestures to move between the two sections of the screen, but people complained that when they were adjusting the knobs the screen was sometimes sliding instead of the knob moving. So, we added those navigation buttons instead. Doing that also freed up some room to make the knobs bigger; in the next release they're going to be 15-20% bigger depending on whether you have an iPhone 4 or 5.