I used to have patches on my denims as schoolboy, when they had holes. It was not quite fashionable, but I was proud of being able to do it by myself, even having used (broken) 2 to three needles in our sewing machine per patch. That was in the 70's. Patchwork jeans became famous at the same time or al little bit later, but looked somewhat different from mine
Now they are proud of showing their holes.
No, I do not like patches or badges on keiko gi. I have one on my weapon bag.
Embroidered names or initials are something different. I am thinking about it. That looks good and might help in the locker room
Dirk
Off topic: TKD gi are good, if they are strong enough. You don't have problems with open jackets.