My D&D group had originally planned on playing Lost Mine of Phandelver (the Starter adventure) with pre-gens and then creating characters to play through Hoard of the Dragon Queen. However, after a bit of discussion we've decided we're stilling going to play the adventures, we're just going to go about it a little different.
Everyone's made their characters using the PHB and we're just going to retcon them into Lost Mine of Phandelver. Tonight these characters are just going to start where the pre-gens left off and for all intensive purposes we're assuming they have been the party the whole time. After we finish the Lost Mine, then we're just going to dive into Lost Hoard. This may take some modification to encounters on my part, but with 5E, I don't think that will be an issue.
Am I excited? You bet your shiny new platemail I am.