Low-tier characters like Rose should absolutely not be going to hard nodes or 16+ cantina nodes. Kylo and Executioner were well-received (they certainly were a nice change of pace after having been forced into farming the useless vets on their 20 nodes). I totally understand characters like Sion and probably even Range Trooper going to hard nodes, but characters like Rose, Holdo, most of the Solo team, etc should all definitely not end up on hard nodes (or high-end cantina nodes). They are niche toons that don't really fulfill a role in the game for raids or pvp, people should not be forced to dedicate several months of exclusive farming to each of them.