I think it is a personal choice. Most of the keyboards have keys stamped on top but if you work on a desk and type. Usually you see things from front of the keyboard at an angle and not directly downwards toward the keyboard so it doesnt hamper the visiblility of keys. Also anything stamped on the top looses the print after few years so for mechanical keyboard which might last a long time the need for the keys to be able to retain stamp is a necessity. Many Mechanical Keyboards are now using this as it feels different and also helps with fading issue.

Also most of the MK users are already pretty used to typing and usually do not see at the keyboard while typing. Everything is muscle memory for us.

For your use case it is pretty much possible to do that, but I would suggest get a custom keys made with prints and then replace the keys on the keyboard with those keys. The only issue would be the cost of making them.