A patch for String Tyrant is unlikely because the game has been considered "finished" for a long while, but maybe at some point it'll get an update so it runs better on modern systems.
Glad you enjoyed it! The games Witch Hunter Izana and Runes of Pandemonium should be on your look-at list, and if you want more dolls, check out the stories. Tense Wire and Instruments are both set in the same universe.