I suggest this poll to be announced on this subreddit so we can get a larger voting sample.
I, for one, would vehemently oppose a hard mode on the PvE server because of death via hunger.
From my perspective, the player that will be the most affected by this will be the new player (either new to multi-server game play or new to p.nerd.nu). In both instances, it's pretty easy to get overwhelmed–there's the server-specific rules, exploring spawn, figuring out where you can build, figuring out major hotspots, finding portals, reading chat and trying to get a vibe from the community, etc etc. I know personally that the lack of death via hunger was quite helpful in the beginning so I could establish a small camp, learn about nearby builds and get acquainted with other players.
This isn't going to affect the player who are well-aware of how P works, players who are well established, players who are easily able to mine large amounts of resources or players who are part of major cities where public resources are available to them–these players will feel non of the burden. Independent builders and less experienced players will be the ones to really feel a hard-mode on P.
This hard-mode suggestion sounds better suited for S where the whole point is in survival. I consider P to be more of a community and/or building-based server so this quite honestly seems like it would be an unnecessary nuisance.