A lot of this is going to come down to taste so de gustibus and all that, but this feels like building on a foundation of sand. If the artifacts can be removed (or at least mitigated), then by all means let's keep going with cool new stuff as long as it doesn't detract from other aspects of a game. But if they can't be fixed, then either these techniques ought to be relegated to special uses (like cutscenes or the background, kinda like the pre-rendered backdrops of FF7) or abandoned/rethought as pretty but impractical.