Considering there may be a high chance that Tin Man will either get a series (much like what happened to Battlestar Galatica) how would you want it to happen? A prequel series could show the events of the war. How the LongCoats fought the Tin Men. Azkadellia would still be evil and DG would be left out (unless it showed her doing normal things at home). A sequel series could continue where the miniseries left off, and show how DG and the gang revived the O.Z. after saving it. Or another mini-series (possibly in a year from now) could be made following one of the previously stated ways of continuing the show. Personally I am leaning towards a prequel series, especially if it focused on Cain and left DG out (since most people didn't like her acting), but I think continuing where they left off wouldn't be too bad either.