>>7158109581.) GTAV is harder to mod so adding all these systems take way more work than Skyrim. GTA6 has 90% of the work done including an NPC contextual interaction menu which V lacked. All they really need is animations.
2.) R* has only shit themselves over map conversion mods, reverse engineering full games, or full game recreations. Basically anything that could hurt a remaster. They do not give a fuck about anything else beyond that