I saw an idea about having gift subtype in gift entry but it need to actually appear in the gift record as well. We have subtypes for payroll-deduction and land sale type (as an environmental organization). It's important to see these fields to accurately analyze gifts.
Hey there! This actually exists today so I wanted to make sure you saw it. If you look in the header of the gift record itself, you should see the Subtype.
It's also available on the Gift List