if anything, i think there are already too many.
take the 'sound engineering' section for example. as perceptually convinient it may seem to have 3 diffrent sections, ie; 'live', 'studio' and 'gear-sound', and as different as these topics are, most of em dont get posted in much. how many of us are there, who are into engineering, that warrants a further subdivision? you can see the usual suspects in these sections, ppl like fiberdrive, iansoh, teraslasch, iowjk, & seekz. weather live, studio or gear, i think this could all fall into one thread.
i guess this could also apply to 'computer and software'. most of the post in there usually relate to setting up of gear or questions regarding audio software, which i guess would fall into engineering.
i think having one 'engineering' section as opposed to 3, (or 6 if you wanna include the computer thread) would make the forum a little bit more manageable for both the posters and moderators.
just my $0.02.