I was rather enjoying it, yesterday. Today, I'm really enjoying it.
When the autopilot switch is turned on, my Loupedeck AP is activated, so the functionality is there. I know there are default AP controls within the sim itself, because the DHC Caribou mod uses them. Can't remember them off hand, but for those interested it's worth delving into it. Altitide hold, climbing and descending to a set altitude, rate of climb - they all work. Haven't tried the nav mode yet; that's a pleasure still to come. Heading hold works, but it slowly hunts 1 or 2 degrees either side of the bug. I suppose it averages out and you get to where you wish, but well worth keeping a VFR-eye out for landmarks below, just to be sure.
There are weak points as already mentioned; the prop discs for example. Also, the engine sound seems to go quiet just as you move the throttles forward from idle, before recovering to a nice throaty roar. The engine start-up could be a bit more hesitant and smokey. There is a flickering effect in the passenger door windows when the door is opened. But the flight model is docile, and can be trimmed quite easily. Cockpit and instrument lighting is very good. As DVJ says, the texturing is stunning - you'll rarely see better on a vintage aircraft.
I liked the Aeroplane Heaven Trimotor, but it'll now be fondly retired in favour of this Tukan model. I hope they do a little more development and refinement, because there is a masterpiece in the offing.