Yes, I discussed it on the DCTP CBox and it seems other people think the same about the .5 numbering Thanks for your input !
In this case, I think we could do this : normal episode number (for example, "176-178"), a different row color, and a little "(Remastered)" note next to the episode title.
(As for the poll, I'm voting for the "Yes but I want it done differently option" since I'm kind of disagreeing with my original opinion)