Having the option to invest into growing guilds through some dedicated system like this would probably bring some growth. I like the idea and in general some kind of an economic overhaul would be welcome, but the reality is that we don't even have the option to place buy orders through the current market system, so it would have to be something a lot simpler.   The merchants vault part I kind of disagree with. Even as of now, a lot of servers suffer from inflation. If another gold spawning mechanic was added, it would have to be balanced out by yet another gold sink. Maybe it could be tied somehow to the system, but doing that without dancing very close to the line of it becoming gambling is challenging.

а что там было, если не секрет?  

И для этого сделали какую-то бьющую хрень в замке, которая сову сбивает

Пример стоимости одного оружия (не топового) к примеру на умирающей Lineage 2 + на умирающем сервере.  Сервер умирал еще в 2016 году, сейчас страшно представь что с ним.  А при этом нужно еще купить шмотки, заточить их, кучу всякой бижутерии, брошки, одежда и прочее.  И вы будете утверждать, что в варспире дорогой донат? 

Maybe it will be better and balanced like this:     Revenge (Passive) whenever an enemy attacks the character with basic attacks or instant-damage abilities, there is a 40/50/60/70% chance for the character to perform an attack against the attacker, dealing damage equal to 15/20/25/35% of physical power. After ending, this effect can only activate again after 10 seconds. so it will be an always active passive skill, but the retributions effect is enabled once every 10 sec or maybe 7 sec in 4/4