Introducing strings.xml is fine. However, we need a way to use different words per a panel on translation... English-only speakers sometimes are surprised to know the fact that "OK" on a button sometimes needs to be translated differently in panel-by-panel basis.

A feature such as "define a translation for OK once, then the translation replaces all occurences of the OK labels of all panels as adefault" is helpful. I'd say more than 90% of the "OK" buttons are fine with the standard translation. However, we definitly needs a way to specify some particular "OK" to be translated differently. For other words/phrases, the frequency of special translation may be larger.