How possible do you think it is? And how do you see it?

It means people like combat system and want to experience more fights with developed character - due to low-speed leveling nature of the game (i almost finished it and didnt hit lvl 30) - most part of the game I played without some fun abilities and gear.
People want more challenging monsters - so they can play this game more like dark suls =)

Actually the problem for most people seems to be more that the leveling is pretty high-speed which is why for a lot of people it gets a bit too easy around lvl 30 and therefore the hope for a new mode on a higher level with a already developed character. To maybe have a more challenging playthrough until the end. It's only low-speed leveling at the start of the game. Then it goes extremely fast.

I'm not sure how likely such a mode is but it's not uncommon for games.

The wolven armor DLC contains the specs for 3 sets of armor and swords above mastercrafted. They are labeled as NP+. I would venture that they are for use when the expansion packs come out and the best set would require you to be around level 50 (maybe a little higher) to wear it.

well. maybe i got this fun no-xp bug then. it took me ages to get to lvl 30
dont think developers will add game+ not before expantions. but mooders can do something!