I use Mocha a lot within the BCC AVX plugins. Is there a keyboard shortcut or way to set Lasso as the default selection tool?
Within the preferences window in the integrated version of Mocha, you have direct access to the Mocha keyboard shortcuts. And they are (somewhat) customizable, however, the Lasso tool is not set to take a shortcut key so unfortunately at this point in time, setting a keyboard shortcut for that tool is not possible.
If this is something that you feel strongly about then I would suggest a conversation with the Mocha product manager, Martin Brennand, to submit a formal feature request for that option. You can find him on the Mocha channel on this forum or via email at martinb(at)borisfx(dot)com.