Pre-MHW games, Gunners at least need more bare minimum knowledge to get into since they're not very accessible to new players, especially since they had their own armor type you can't mix and match with Blademaster stuff outside of helmets. Bowguns especially come to mind, but Bows could also have different shot types for each charge level and it's another thing to think about.
In MHW though? LBG is safe as houses, but it in earnest deals dick for damage outside of something like Kulve Taroth. HBG is actually good if you can use it properly (read: Cluster spam or Spread), and Bow in this game does a retarded amount of damage with Critical Element sets. Either way, playing more like a third-person shooter helps accessibility but they're mechanically a lot less interesting than they were. The abolishing of Gunner armor also comes at the cost of unique armor designs.