ASIair needs more "advanced" features in general- not just for guiding, as the system is very... one-sided when it comes to the UI-user experience.
I can't tell you how many times my nights have been ruined by guiding before I switched to IR imaging/guiding. The EQ6R is one of the better mounts on ASIair, however going from 0.1 on PHD2 consistently, then to .4"-.7" on 2.1, then to a rediculous 1" +/- .5" on the new testflight is not acceptable at all when my sampling rate is .578". Even with my OAG it has got worse.
The 256GB ASIair Plus should've at least got something similar to this on launch since the infrastructure it is built on can handle pretty hefty computation loads.
Heres a list of features I've compiled from a lot of different people across the community that need to come for ASIair to stay relevant in the near future:
Advanced Guiding Settings.
Satellite Tracking.
Multi-Point Mount Alignment on the ASIair Side.
(Jumping from Synscan to ASIair is annoying- especially when you have no eyepiece/camera monitor instead of a phone going at .71 frames per minute, aligning is a pain in the glass.)
Updated & customizable UI- 8 point slew panel, seperate pages that interface directly with the preview to enhance controls, etc.
More intuitive sky map / settings for sky map on the mount page / more objects & better hints.
Custom preview / histogram stretching / white balancing.
Science tools