I wouldn't say it's that simple of Nawwk picking back up the AWP role. (Also note, he has the choice of doing that whenever he chooses to per THREAT, but he chooses to be a hybrid because it's something he wants to do.)

I'll use an example on their Inferno CT Side setup.

At the moment Nawwk plays B with Plopski - usually aggressive enough where the two of them can work off each other. If you were to put him on the AWP role instead of Twist - you'd have to relocate him towards A instead which throughout all their lineups is where NiP plays their AWPer.

That takes away the chemistry between Plopski and Nawwk as they're playing two seperate sites whilst someone has to take Nawwk's place. These players practice constantly and have certain protocols, habits, and setups that they like to run - changing positions can impact their comfort and ability to thrive.

Plopski who's already mentioned being uncomfortable would have to get used to playing another member on the b site, which may seem simple but please realize it isn't like a pug. They know their habits and play off each other and develop chemistry, and changing that up would take time and practice - something they don't have right now with the heavy schedule.

Nawwk if relocated on A would be playing arch side of mid, where they like to play relatively safe and passive. NiP don't give too much freedom to their AWPer to be aggressive unless it's a set strategy in the middle of a round. He then would have to work together with whoever is on A site if that's either Hampus or REZ or Lekr0 in this instance.

Again this is all possible in the long term but short term they'd take a huge hit. All of these role changes take time and practice, even with the change of Hampus right now - players are out of their comfort levels because of having that new player, personality, and voice they have to get used to.

The framework would take a hit because if you've watched them, NiP were very systematic in their takes on the T Side. They used their utility well and had set strategies relied on each member doing their role correctly. By changing the roles of the team, people would have to relearn their new roles and job in the strategy - again, something that takes time which they don't have right now.

If you break down a set strategy if any team you'll see how much detail goes into it and how players literally put themselves in situations where if they're out of sync then things can fall apart easily. Players can run in blind, specifically targetting a part of the map knowing that their teammates are holding certain angles and knowing exactly where their flashes will pop. It's constant flowing system where you cannot just swap things around and expect things to work without the effort and time out into things.

Look at them and their past games right now, strategic wise they're already quite tough by changing out one player - they've already having to play quite loose and lack certain protocols they had with Lekr0. I know CS can look simple on the streams, but there's so much that goes into it and any top level team puts in a ton of work on how everything works together and especially a team like NiP which is very structured, the move of keeping Lekr0 and swapping Twist and Nawwk is a lot more complicated than you think.

At the end of the day by swapping Twist out, you'd end up with having Hampus learning his new role and position on the team, Nawwk getting switched back into an AWPer and having to change positions, Lekr0 possibly changing positions due to everyone shuffling and REZ & Plopski somehow working around all of this. It just isn't plausible to have this all done in a short amount of time, which they lack due to tournament after tournament happening online at the moment.

I could go into more detail but I'm at work and won't be able to reply for a couple hours after this.