Thank you for the feedback! Allow little old me to answer a few of your questions:
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One thing I will get on immediately. The game right now will NOT add any additional love interests as it is already too deep into the story, and inserting them at the end will only prove to be more difficult. This is just to set expectation that as with everything, not everyone will be available and will only be there for support on specific character/s. We don't want to lead anyone on as we keep getting requests to add more date-ables so we just want to set this in stone.
Runan is more of a stereotype. His attitude is very much intentional as he is suppose to be paper cut in terms of who he is. So his wordings and attitude may not change, unless 90% of everyone here just wants to drop the guy :<
The Elder not having a name, similar to the housekeeper, is more of an homage to older monster hunter games where relevant characters do not have a name (Even as far up to MH World). Fun fact, if you name yourself as a default name "Scriviner", some dialogs change when they address you usually by name, as we think it is still something that we want to keep. So overall, he does not canonically have a name other than the Elder.