While I affiliate with towns (this rev Pico and Whiteoak), I've primarily been a solo/small group builder so I speak from that perspective.
[TRS] While I agree that the tech tree needs to be expanded and lengthened, I hate the limited iron spawners. I study full time plus I am a parent and while I do spend a lot of time in game, I feel as if I have to stay and play longer to resource-gather to be able to progress evenly with the rest of the community.
[RIG] There are plenty of alternate techniques to iron in builds already (ice/water flows, glass elevators etc) and ways to get around (ice/boats compared to rails) but one thing that cannot be combated is latency of international players. It's a thing, it will always be a thing.
While I love jetting around on my boat on ice, ~100 blocks I start lagging and my screen starts spazzing out. My horse can't be above a certain speed or I travel faster than the chunks can load and my screen starts spazzing out. Rails have always proven efficient for me, but since the plugin updates that increase the speed of rails either the builder doesn't account for players setting the speed slower, or I don't adjust my speed and, you got it, my screen spazzes out.
And while I know this isn't an issue for the wider community, it sometimes crosses my mind that when implementing these changes the staff sometimes overlook the fact that we have international players on potatoes that need to be taken into account as well.
I actually miss the trade plugins from Survival and I think something similar should be implemented for P. I'm picturing something like an auction house where Players A, B and C put up items they want to sell and Players D, E and F have the option of searching for that item and what the selling players are willing to trade for it. The option for a quick sell is still there in global or the trade clanchat, but this option is there for players who don't mind waiting for the sale or players who play when the larger community isn't on due to timezones who want the opportunity for trade.
I HATE the prizes for timed events. Things like padmin hunts, parkour, resource gathering etc are stacked heavily towards players who are on constantly. Others have addressed it more succinctly so I won't elaborate, just adding in my agreement. Adventurer's Guild is a good idea. ToS was fun to work with others to figure things out.
Showerthought: Implementing personal levelling to unlock the tech tree. Can't craft iron items until level 5, gold level 10, enchant table level 15, diamond level 20 etc. Obviously for this to be considered it needs to be thoroughly thought out, written, balanced and tested before it goes live. The numbers I have stated are quick examples.
[iGS] I actually suggested the spawners a few revs ago during a community meeting when entity lag was brought up. I'm 100% for them as an alternative to vanilla iron golem spawners but they have to be balanced correctly. What we had last rev was good, but needed to be worked on. The larger cities could tier theirs up as a group while solo/small builders could still have one at their base and travel elsewhere for bigger amounts. The system that was in place should have stayed the same, what needed to change was the higher-level tiers being nerfed or even limit the amount of spawners in a chunk radius.
[Other random thoughts] I agree on what dny said about the community's voice being too big of an influence on server direction. There is nothing wrong with hearing the pulse of the community, what ruins it is when the community is the one directing the flow. That happened on Survival towards the end which resulted in no vision for the direction of the server or community. Instead of floundering around and asking the community, "well what would *you* do then?" the padmin and head admins need to sit down and knut out a short, medium and long-term goal and vision for the servers. PvE is nerd's flagship server, it's generally what people first see and join in on when they find us. The impression given at the moment is far away from the impression I first got when I joined rev 12.