Of course, you COULD just ignore the fact that their names are the same and have each of their cards that say Legacy only apply to them, and have limited cards be on a one-per-player basis. It's not technically how the rules should have it, but technically the rule is "don't do it," so whatever, and this is less complex.
In the game we played, the limited cards weren't a problem. Finest Legacy was the only one who played Inspiring Presence, Young Legacy was the only one who played Surge of Strength, and Greatest Legacy was the only one who played Fortitude, which is ironic when you think about it.
I think Blade totally underestimated Platform Bot, thinking maybe it was a toy or something. He looks a little bemused but unconcerned, and he's certainly not rushing to do anything about it.
I wouldn't be surprised if the next frame involved Blade clutching his sliced-open and cauterised face.
Shave-bot!
I like the rules that limited apply to all of them, so you can't stack fortitude or inspiring, but each card only applies to the Legacy whose play area the card is in. It causes them to specialize, and is more balanced. (three insp. presence and a galvanize is too much)