I can't access Solidworks right now (our license server is down). However, there are two things that I can think of off the cuff.
1) I think that You can Shift select all your views in the tree and change it for all views at once. Maybe....I would have to test it and I think I remember doing something similar.
2) I think that there is a setting:
Cosmetic thread display option in Tools > Options > Document Properties > Detailing
You would have to update your template to make this permanent.