Ugh! I know... users always be wanting features!
If the way to go for AR iPhone is tool pre-sets rather than attribute sliders could it ever be possible for users to export 'New Presets' they use in AR iPad to AR iPhone? There are oil brushes and bucket fill settings i have 'perfected' on my iPad that I would so much like to use on iPhone.
Also... As a 'modern-style' painter I would love a square tip 'bright' for oil brush on iPhone.