YouTube's Pinkman, has recreated the Halo 5 trailer in Grand Theft Auto V, using the Rockstar Editor. Pinkman has previously made recreations of Breaking Bad and Skyrim, which both looked quite impressive. You can view his latest project below.
https://www.youtube.com/watch?v=DRFmdyFhR24
Rockstar has talked regarding mods for Grand Theft Auto V, saying:
We have always appreciated the creative efforts of the PC modding community and we still fondly remember the awesome zombie invasion mod and original GTA map mod for GTAIV PC among many other classics. To be clear, the modding policy in our license has not changed and is the same as for GTAIV. Recent updates to GTAV PC had an unintended effect of making unplayable certain single player modifications. This was not intentional, no one has been banned for using single player modifications, and you should not worry about being banned or being relegated to the cheater pool just for using single player PC mods. Our primary focus is on protecting GTA Online against modifications that could give players an unfair advantage, disrupt gameplay, or cause griefing. It also bears mentioning that because game mods are by definition unauthorized, they may be broken by technical updates, cause instability, or affect your game in other unforeseen ways.
We will bring you any new information on GTA V, new mods and more as soon as it becomes available.