Possible to add width/height options for Text Template Variables?

When I add a Text type variable, the size is always static no matter how much text I expect a user to input. We would like to be able to use Grafana to input adhoc SPL searches and return to a table.
Could a feature be added to override the default size of the text box (even just width would be helpful), as we are able to override in table columns?

Thank you!