I am wondering if it is possible to set my customized ticket list, with filters, etc, as the default list that freshdesk displays when i sign in?
You can 'save' the ticket list with specific filters applied (and also in a particular sort order).
For instance, if you'd like to see a list of your open tickets sorted in ascending order by their due dates, select the relevant filters, sort the list and then click the 'Save as' check mark to save the view.
When you sign in, tickets would typically be arranged by the view you saved. Even if you change filters to view other tickets, you can access the saved view by selecting it from the drop-down.
Hope that helps!