That's a pretty subjective ask. My tolerance for the amount of NPCs is going to be different than yours. If it wasn't for you before you might want to work with a crew cause it didn't feel like a change.
With that said the first new mission is a timed puzzle PITA solo. Doable yeah sure. The NPCs seemed to be the same the worms respawns relentlessly while you are trying to complete the first puzzle that resets after a certain about of radiation bursts. I also had 3 different players arrive while I was doing the mission. That seems to be a change. I rarely got encounters before.
Idk either way you're just going to have to try it out yourself to see if you can tolerate it. Good luck and maybe see you in the verse.
PS: Don't fall into the worm pool like I just did.