Not to mention that now we have a whole bunch of clients and need to somehow switch to the new format.
Well, at least for this part, jean-luc said he would support whatever format the community came up with, right? So whenever you and ricot finish your RS implementation (how is that going btw?) I'm sure we can seamlessly integrate it into NRS and all other clients.
It still doesn't make sense coz we move from signing transactions on NRS to signing on client side.