Memorial District at IC launch was the OG. At least on PC/NA.
Kena Legion XIII Excellence without elitism
Premier small scale PvP Legend NA/PC's original dueling and PvP community guild
Now NA/PC's dueling, BGs, small scale, GvG, and general PvP community. We float just under 500 members. Mail me in game for an invite.
I have fond memories of Memorial, but it got old fast and players stopped playing it for that reason.
Think of FPS games like the Battlefield series. If they had gameplay mechanics like IC, would they have been as popular for so long? Not likely. So many of ESO's mechanics are straight from the 90s; but even then, devs, both professional and amateur, knew better than to allow players to attack from inaccessible respawn locations.