Now I know this has been suggested numerous times. I know you have recommended taking the lowest note from an EZKeys line and running it through any bass simulator and yes, I have done that several times and it does work – but it misses a couple of opportunities for your product range:
First – you have the capability to provide the multiple samples of iconic bass guitars as you have done with EZKeys for both pianos and other keyboard instruments – Fender Jazz and Precision, Paul McCartney’s Hofner Violin, an upright Double Bass, 6-String Baritone as often played by Jet Harris – plenty of opportunities for you.
Second (and more importantly) – I believe an EZBass module could provide a drag and drop link between EZDrummer and EZKeys as it provides both the rhythmic link to the drums in a classic backline and the harmonic content of the keyboard. For example, you could write a bass riff, drag it into EZDrummer and get a suggested MIDI accompaniment as a variation on the current Tap2Find feature. The bass riff could also be dragged into EZKeys to suggest a chord accompaniment – or vice-versa, the EZKey chords and rhythm dragged into EZBass to create the bass line (and from there to EZDrummer to create the complete backing).