Bass and treble are currently implemented in Hijack by... um... hijacking two bands of the equalizer. So this is not an optimal way of implementing bass and treble. The right way to do it would be to use the DSP's built-in bass and treble features. So, in theory, the empeg guys could add that in version 3.0-something if we kept asking them really nicely.

As far as the voladj is concerned... The Karma has an automatic gain control feature, and since the 3.0 empeg software shares a code base with the Karma, it is feasible that a future (improved) version of the Karma AGC might possibly appear in one of the carplayer 3.0 alphas.