The Mirage design team (Bill Rose, Joel Mick, Charlie Catino, Don Felice, Howard Kahlenberg, and Elliot Segal) while working on Visions ended up creating enters-the-battlefield effects as well, but I hadn't yet seen the cards when I created Gravedigger
Imposter Mech Clones are usually either incredibly strong, or completely unplayable
Fundamentally, I'm not sure that Eiganjo has an easy home right now, but it's a powerful enough spell/land that it's worth keeping in mind, and it will probably show up in Modern at some point
Most players who wish they could dust some of their old collection are doing so not because they're asking, What should I build, but rather, What can I build?