Yes bring more Duo, you do not have to play with randoms. it's YOUR own choice, people have friends to play with and can share the loots either ways and learn mechanics together as a DUO. they could also put personal loots like in demonbane in them and no bidding ( random loots to each member of course ).
Spectral shrine Duo NM-HM
Shrouded Ajanara DUO EM-NM-HM
Sanctum of the masters DUO
Playing solo is on your own volition, no one is tying anyone's hands to force them to be with anyone. but making the game more of its name MassivlyMultiplayer instead of Solo content(with a choice) is highly recommanded
I VOUCH