Let’s see…
Market screwed into more consolidation to Jita by removing margin trading and adding high relist fees. Making it expensive and not worth it to put orders in remote areas.
Adding new resources to existing low end ships to make them way more expensive and harder to build. What you could build before your suddenly couldn’t build. (Should have kept old ships the same and added something extra to the ships if made with extra materials ie: “augmented raven” or new ships that would entice people)
Removing asteroid belts which not only removed ore but removed areas of activity, officer spawns, etc Then put the rats on gate to make them interfere with PvP. Then the “creative fix” is to make a single garbage beacon for them.
Introducing mechanics like ess, sites, etc with “rules” that violate the open world sand box or limitations about who can enter, etc (I don’t mind the bounty modifier for over utilizing a system, I dislike the ess site mechanic and other artificially restricted sites themselves)
Adding arenas and instanced areas and making them more lucrative than open world money makers taking people essentially out of the game.
Removing certain content stating they will release a better version of it later and then nothing.
Structure spam so that there are 50 places to dock in every system.
“Soul bound” items that have no place in the sand box.
Removal of many ways to create mischief or hunt in high sec so now you just see a boring consolidation of suicide gankers in select systems or large war corps that blanket. (Not their fault ccp pushed things in this direction) then when destruction is too low because players are now constrained, adding new npcs to high sec to take over players role.
Making sov mechanics more PITA complex and not fun over time. Yay for weird artificial hoops to jump through to wage war.
Scarcity breeds war in real life because if you don’t eat you starve and die. In a game scarcity breeds risk aversion. Rather than scarcity players should have been given more reasons to destroy resources and less reasons to hide out in solo instanced content.
Mechanics such as having to decloak to prove you aren’t afk while cloaking, while having a chat channel user list be the ultimate source of free Intel.
And on and on.
It’s no wonder things are in the state they are in. Then pile on the fact that they raise sub price and in the recent while have released little new content.