I didnt mean it should literally look like Rez. My advice (which of course might be not as good as i imagine) was more about a more "artistic" representation in general to make up for a - sorry to say - imo pretty dated polygon look in it's current form.
Another example could have been Milestone, whose engine and ultimately the final representation of Chaos Field was nothing to write home about either, but the cell shading and general cartoony look of their succeeding products, namely Radirgy and Karous made them pretty nice looking even to this day, despite seemingly nothing mindblowing has been changed under the hood.
You could also mix things, like for example: polygons for the environments, bitmaps and the likes for the characters, enemies, and maybe even the projectiles and make these bitmaps stand out by their unique art direction like the characters in the first Grandia, instead of generic looking „3 polygon thingies"
Just my 2 cents though
