Select starting Gwent deck

So for my second playthrough I really wish you could pick which deck to start with, I would love to do a monster/scoia'tel playthrough but it sucks that you have to wait until you've played over 50% of the gwent content before you can even put together a legal deck, and even then it won't be nearly as good as your northern realms until you've done basically everything the game offers gwentwise.

I think it would be great if you could select the starting deck, to add some additional variety to gwent, facilitating several playthroughs. It sucks that they have all those decks that are basically never used by anyone. Ofcourse they would have to remove the cards included in your chosen deck from stores, and replace them with the cards you used to start with, and also they might have to change some of the rewards so you get more cards relevant to you. But I feel like it'd be worth the effort, for me atleast.

Would this be a good change, or would it hurt the new player experience? Would it be possible to balance well enough to make it work? Would this be possible to mod?