Haven't played long, but the server looks like it has alot of potential. It has some things to polish out, but I think with the way things are set up, it'll be pretty good.
I play the PvP world and some of the things kinda ruin the PvP aspect when I look at them. For example, I would understand if you could lock a single chest, but with personal safes, is LWC really necessary in the PvP world? And on that note, the rules seem to imply raiding is allowed in the PvP world. I think that if this really wants to be a PvP world, the full PvP experience should be there with raids and maybe some weaker explosives. Big explosions like nukes would lag the server, so maybe allow TNT in the PvP world for raiding. Just my suggestion, maybe also limiting or removing LWC in the PvP world if possible, and on a similar note possibly banning the use of safes in the PvP world. I'd rather not spawn kill a guy until he gives in and opens his safe.
I honestly think PvE is boring, but to each person their own. I think the PvP part of the server could be better and more fun and exciting than just killing people, but extending it to wars and raids would be fun too.
EDIT: Also, the factions plugin seems to not want to let me make my brother a faction officer. : L
EDIT 2: I also just found out that there is this shovel based protection system that prevents breaking of blocks near my chests. My only comment is that this seems somewhat redundant with the Factions plugin, which is more suited to PvP and seems like a better choice in my mind.