I've made a few posts in the "Feedback" thread in the discord about PvP specifically.
I come from an OSRS background of PvP and I understand that my opinion is different than the tibia players, but the biggest issue that I can see is that there is no single zones, every inch of the map is multi-combat for PvP, also there is no level discrepancy for who can attack you.
There are other issues that I could list, but with these two things alone, one team could single handedly own the entire map if they wanted to, they could power level beyond the majority of players and dominate any area of the map and prevent and solo players from ever experiencing PvP and gatekeep literally anything they wanted.
This is very discouraging for solo players specifically, but also for pretty much everyone. I genuinely think that most areas(or at least half) should be single zones for PvP, and there definitely should be a level discrepancy so that lvl 60 players cant attack lvl 15 players, Maybe like a 5-10 level differential between the players that can attack you. These two things would be a no brainer in my mind for PvP design, I do not see any benefit in game design with having very high levels being able to attack very low levels, but please correct me if i'm wrong.
Another thing that I didn't like is that if someone attacks you while you're pvp flagged, and you attack back, you get locked out of safe zones for 5 minutes. As The defender; the one being attacked, you should be able to fight back without the penalty of being locked out of a safe zone, I believe that only the person being predatory(the attacker) should suffer the 5 minute penalty, and the defender has the right to defend themselves without suffering the same exact penalty as the attacker.
I read the post above about different skull tiers, and I think it would be an absolutely terrible idea to implement IF my ideas weren't implemented. To have better incentives for different skull tiers WITH everywhere being multi-combat and no level discrepancy, clans would have such a massive advantage, they would surge so far ahead of a solo player, or just any clan that doesn't play as much or is not as determined to basically own the entire map. It's clearly bad design for overall longevity, and just enjoyment of the game.
I thoroughly enjoy pvp, but I mostly enjoy solo pvp, so my opinion might be biased(i'm really not sure if it's biased, as this opinion just seems like a completely integral change). I think that having a lot of areas that are single way combat is a fair balance it the game, and the level discrepancy seems so obvious to me as well, but you guys can let me know what you think, I understand clan members or people part of big communities are going to think otherwise, but I'm trying to think of it in an objective point of view; cater to all groups of players not just one.