Just listened to "Blind Summit" and something I'm thinking of - in the story itself, Ianto was injected with the Excellium drug, which can create supersoldiers. We're told that it didn't work and that the only impact it had was it giving him back his lost memories.
What if it did work? We know that Ianto has the eidetic memory - what if he didn't have that at birth but gained it through the Excellium Drug?
If so, then it falls into the same category as his love for suit and talent in making coffee - something that was drilled into him by Torchwood, changing him into something different, something loyal, the perfect soldier doing the duties of Queen and Country.










