Reward/End screen customisation

Hi, I am looking for some information on reward/end mission screen
modifications. I was wondering if in current state it is even possible. If
yes, I wanted to have a screen where a flight time is displayed and maybe even
a leader-board. Any information, samples or templates are welcome, as with
recent “changes” to Script Editor I lost my “go to” way for experimenting with
undocumented features.

You can add a score to the end screen like in landing challenges and training
missions. You can probably customize it to show flight time. Look in
propmission.xml to see all mission objects and experiment with them
(specifically “Score”). I don’t think it’s possible to add a leaderboard