For me, the real difference I’m waiting for in 5.0 is Verse, as an alternative to represent game logic in blueprints or C++. SkookupScript got abandoned few version ago because of it, Lua integration is very painful/manual. Obviously, one can write a very good game in C++ or blueprints (or even assembly), but Verse might improve quality of life considerably for non-C++ people who still like to code.
Of course, it might turn out to be very limited in capabilities or not available for another year while they polish it behind the scenes - we will see.