Links to proposed FAA policy at issuing limitations are going around. Apparently they are going to prohibit carrying passengers in E-LSAs converted from S-LSAs, among other things. Not sure how this is going to impact RV-12 that come from the factory as E-LSA.
http://www.psfmagazine.com/2014/03/m...ed-faa-policy/
The rocket and electric stuff is worrying as well. I'm sure XCOR and Earthstar aren't going to be pleased, but those aren't common like formerly S-LSAs.
P.S. Apparently one unexpectedly hit community is the pilots of CubCrafters's Carbon Cub, who convert in large numbers immediately after purchase in order to install tundra tires.