Not a 3.2.9-specific thing, but I would like to suggest a change in the behavior of transferred tracks when the receiving controller logs off before assuming or rejecting the track. At the moment, the behavior is identical to a refused track, which can create problems with silent transfers to a controller who then logs off unexpectedly as the transferring controller may not notice that they own the track again - especially if it’s busy and/or the aircraft is already outside of the sector/off the controller’s screen - which in turn prevents other downstream sectors from assuming the track. Depending on how far away the next online sector is, the upstream controller may have to disconnect entirely to drop the track, which is by no means an ideal solution.
It would be preferable if the track was just dropped entirely in this situation.