There are most definitely plans to do this! There have been a number of 'generations' of Leviathans. The original 1890 versions exposed airscrews and less efficient steam engines and elecrical systems. These have all improved over time - airscrews to single ducted fans to compound ducted fans, vertical expansion to double, triple or quadruple boilers, and so on.
And yes, guidelines for these will be released at some point.
W.