You might consider writing an online version of guitarix and rakarrack so as to increase the reach of your business.
keep it free if you decide to do it and include a DSP rack like rakarrack for more useability.
and post tutorials on how to write everything online so that everyone can edit it and submit good patches and stuff like that. I got a lot of features to write, but not yet, i still gotta work on some more math and stuff like that.
im gonna simulate chemical amplifiers(which can be done) but i still have to design the molecules and stuff like that.
but yeah an online version of guitarix and rakarrack would be great and would probably help get the word out about it too.