I definitely would be open to adding different types of gates/sizes etc and actually do want to go deeper on these non-flight features in the near ish future. Data does remain the biggest obstacle to these types of features and I do plan to crowd-source data updates (one of my goals right now is to class nations/cities by their business/leisure appeal for the new demand model that is in the works), @Eagle Express Holdings LLC I am open to naming a new data manager if you're interested in helping with the data since we don't have one right now.
That said, my current priorities as far as non-flight features are:
Expanded fleet management options, including greater control over maintenance, more in depth IFE/IFS etc.
More in-depth reputation system, to tie into the new demand system that will view different customer segments differently so you can further specialize an airline to target specific market demographics (ie business travelers vs. low cost leisure travelers etc.)
Expanded staff options