Reading various opinions and combining them with my own I have created a great feature to implement about the topic of Maintenance.
Firstly runway maintenance.
Currently you just click repair runway or cue auto repair which isn’t really realistic. Runway repairs should take a time slot in the aeroplane scheduler of a certain time to repair the runway. This would affect your airport in a way that it makes the game more strategic planning good times whether a short time of 1 hour everyday to repair the runway or a long repair of 3-5 hours once in the week. To repair the runway a new staff called maintenance crew would be required. The more hired and the higher the skill the more the runway is repaired in a shorter time.
Secondly maintaining aeroplanes for airlines
Contracts should be offered for the airport to care and maintain aeroplanes. These would require a building of either small or medium aeroplane hangars with runway and service road connection. It would also require high level maintenance personnel. The contract would outline the certain level of worker required to maintain their aircraft. Smaller repairs can be made at the gate if required. General Aviation would also be able to pay the airport for maintenance. The maintenance hangars would be assigned to either airlines or General Aviation. (Credit to this work at @ncg75) (Click this link Maintenance Operations)
Plus shout out to @Puma he’s just a legend and got some really good ideas.
When the next voting round arrives we need to vote this in. It is a great addition to the game.