Don't worry, no Valeyard Doctor :) Just an alternate series of events leading to ten's regeneration, resulting in a different version of eleven. (As per my theory of how regeneration works.)
Super sorry! Thought I never posted in here as my phone died as I hit post and then lost you!
I'm up for absolutely anything who related, I once toyed with the idea of an alternate timeline version of eleven (in which he becomes an entirely different Doctor to Smithy entirely.)
Just realised that the character I had in mind would not fit this time period. However I can whip up a new one. We don't have a gambler/talker/lucky SOB yet right?