Hey Todd. Yes you would need to submit an Idea for this. You can do that by clicking the Ideas menu option at the top of the main Track-It! community page using the link below.
You would need an Idea as it is not possible to change the default field that is highlighted when you open the Asset form. It has been this way in Track-It! 11.x and prior versions for as long as I can remember. Perhaps as a work around you can set Assets to Read Only for individuals that are accidentally changing the Type.
FWIW, the new Track-It! 2019 version has the ability to customize the form and the tab order of the fields so that may be something for you to consider.