If I could have anything as far as features.... A Momentum toggle - A switch that could toggle between two pre-set momentum parameters. Momentum A would represent running light, MB would represent a train. Auto Spin - Programming that would be active during heavy throttle while using heavy momentum. I.e. if you apply more throttle than the acceleration curve allows, the motor would spin up. How could this be made to work with jack rabbit acceleration on our relatively light trains? I don't know, but I want it! Auto speed match - place a control locomotive and and one with a new decoder in it on parallel tracks, accelerate the control locomotive to speedstep A, match that physicla speed with the second locomotive, assign the same speedstep to the second locomotive and associate the phyiscal speed with the speed step. This doesn't take into account the acceleration curves matching or not, so I'll have to work on that wish list item... A retrofittable sound trigger for steam locomotives - I'm a steam snob and darn it, if you're going to have sound - it's got to match the actual mechanical goings - on! Exhaust sound for steam is getting better - but how about tying it power being used? Right now there are several decoders that change volume depending on whether or not you are accelerating, but they are fixed levels. So if you accelerating with a train or light, you get the same sound. If this was tied more dynamically to motor power applied you would get quick acceleration with low sound levels (running light) and slow acceleration with hight sound levels when you've got a train. I'm sure there's more in here, but I'll wait for the muse to come calling again. Fluesheet.