I have the regular and S1, S2 planes Giant, Falcon, Thinderbird.No I know what you mean, but it actually balances things out. However, the S class planes had an advantage of faster speed, but now they lose that advantage in regards to repair time, so now people will think twice about obtaining them
Now i was thinking to sell some of them because of the new repair items then i stop and thinking about those players who complete 5 years playing with these planes they are not spending greenies just wait the 12 hours now are they going to sell all planes they have i dont think so and also they reach the 1000 stars nothing change for them.
If you do comparing all are the same because now as player you will spend days to collect some new repair items and you lost other items that you need flying items what is the priority for you.
You can send 20 gift maybe how much you will receive per day.
then when i save these repair items i will use them in a day maybe because Gi will make these planes break down more they not give easy things for the players.
Then repeat again but the other planes need greenies to repair yes it will stay 12 hours but in same time i am saving more fly items i need.
I try it with 1 falcon break down 3 times in a day i am out of repair items i cannot change my game name just for repair items so i go back to use it as before wait 12 hours and break down after few days
This is my opinion