Well, what about Kyle Landry then? He's a very talented pianist and composer and only at the very beginning of a great career and giving him a chance in the industry on some bigger level might be a smart move by Larian. Such a young talent without a huge track record of compositions for video games could be the perfect succcessor to maestro Kirill, meaning a fresh start for the series with somebody who doesn't have to compete with Kirill (yet). He could both leave his own mark and honour Kirill's legacy in the Divinity series.