Unless there is clear
Unless there is clear acknowledgment and a plan of action for dealing with deposits on the backs of intake valves in DI engines where they typically don't get cleaned with fresh gasoline spray but do get recirculated exhaust gas and PCV oils deposited on them, I'm not even considering buying another one.
Been dealing with this on our VW 2.0TSI every 35k miles. Needs the intake manifold removed and each valve hand cleaned or you get poor performance and eventually misfires. BMW owners have been having fun blasting walnut shells at their engines to clean this crap off.
Whatever gains in performance there are when new/clean are gradually lost over 30-50k miles. And then you take apart and clean again.
Toyota is now using an extra spray fuel port to periodically hose off the valves and Mazda Skyactive engines keep the area less cooled to alleviate the buildup.
Again without a clear description of what Subaru plans to do to address this, Not interested in Direct Injection engines.