I never use tags because I find the mostly useless. You end up with hundreds if not thousands of tags, frequently misspelled. What I'd prefer is a second dropdown that requires the user to select something similar to a predefiend tag for every question, e.g.
Cars
- Audi
- BMW
These are the categories and subcategories. Then I'd like to have a tag or group of items that I can use, e.g. "new, used, dealer, other" There are numerous different options for this. I'd hope this would be in the core and would probably pay a developer to include soemthing of the like to include at least one other taxonomy that allows for two levels of classification. Is there anythign in the core or plugins that allows you to do this or limit the tags that can be applied to any question?