Voted yes

With the way guild IDs works currently this would not work.

I have been in several guilds over the course of my time on d2jsp, and more than half of those guilds don't exist anymore.
Guild frequently change names, and change hands (owners) . Plus when viewing a members old guild, that guild may have changed drastically. I would hate to be judged as a person when joining a new guild based on what an old guild I may have joined has become.

While I would find it interesting to see what guilds I have been in, this doesn't seem like a possible suggestion. I will hold my vote in hopes of a counter argument for now

Voted no for above reason.