Aion kinda has a similar idea of being able to see other players Equipment. This option can be turned off.
Obviously with GW builds are limited compared to Aion so the skills are more important.
I really like the idea of having it and if people are so QQ about not wanting to show their builds then they can turn it off.
For speedclears reordering can be a pain you can lose people etc.
Seeing weapons and armor could be nice to check someone isn't running un runed. I mean at the end of the day it's not going to be implemented. I would love it to on the basis I'm one of those people that doesn't like not having the proper armor runes and the correct weapons. I expect other people to run decent armor and weapons. BUT I like the idea.
I cant say much for Pvp. I don't do it
I guess for normal PvE it would allow a team leader to see hero builds and peoples builds. Especially with friends and helping them out. Seeing what build they are running you can give advice etc.
If you care so much about your build being stolen, don't play with other people. If you want to try it out tell people. It's not like from the build they are going to know exactly how you run it
/signed.