>>9080456people paint their kits to make it more accurate to the original art.
painting portions looks a million times better than having to use color correcting stickers that are included in most kits.
spraying topcoat also makes your kit look less of a plastic toy.
>what other modifications are there i didnt see anything like that in the guide.stuff like scribing your own panel lines (pic related)
sure theres technically nothing wrong with leaving your kit but theres just so much you can do to it to make it look visually better. even just inking the panel lines makes it look better.