I'm still hanging around on vacation (or held hostage by a well overpriced hotel like I would call it) but at least I was able to have a good look into the wallet / node code. The upgrade needs to be done in 2 steps, first one to sneak in BIP65 and BIP66 as they are still following Bitcoin's isSuperMajority rule and it wouldn't be worth the effort to change those to BIP9 as well IMO. The required hard forks can take place there as well. Second, we could simply upgrade to the latest version whatever this will be but I guess Litecoin 0.14 codebase is the way to go.

I also agree that the new specifications need to be fixed and frozen before actually getting some code out in the wild. There for feel free to discuss them and get us on thinking, coding and testing ;-)