I flew on Strategic for two holidays last year, both with Olympic. We had no problem and thought them rather good. The seats were roomier than on other charters. There is a long string on Strategic on TripAdviser - just search for Strategic. That mentions refurbishment of planes and contingency arrangements for replacement planes when there is a fault. However, judging by reports, it doesn't sound as if the contingency arrangements have bedded in yet.
Good luck to everyone flying Strategic. It'll be us in July and September. Perhaps someone will report back on their return from what appears to have been some nightmare journeys.
Arnaki