Controlling the leslie with the mod wheel isn't by any means a new feature. Many other keyboards have been doing this for years..., unless there's some new way that the T3 is doing this..,, I can't see anything "shock and awe" worthy of that feature.
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GEAR: Yamaha MOXF-6, Casio MZX-500, Roland Juno-Di, M-Audio Venom, Roland RS-70, Yamaha PSR S700, M-Audio Axiom Pro-61 (Midi Controller). SOFTWARE: Mixcraft-7, PowerTracks Pro Audio 2013, Beat Thang Virtual, Dimension Le.