But it is something to do once I finish game!
Properly designed game would still have challegens left in it even for expert players. Challenges that are not based on repetition but rather at figuring them out. There should be always possible better combo to try in certain area. Big enough game world will still offfer missed quests or unseen sceneries. Even something as simple as trying character with different playstyle renews whole game.
But that is not answer, answer is: You finished game, maybe it is time to move on. Remind yourself that that game was not meant to be playet for your whole life. Eventually servers would go down anyway.
If you want it to kill your time with grind, you are free to do it yourself. You do not need title to kill one million Rats. You can still show off on forums that you collected thousand dragon eyes. Yes, it is pointless. But dont be mistaken: well deisgned Grind should be pointless.
People should work for (some grind reward).
Its wrong, first of all, it is just game. If you take it seriously enough to decide that some content is accessible only for few chosen anfter X (X being number with two or more digits) hours, you need to reevaluate your goals. Your goals in real life out there, you should see that there are more worthy goals that require serious work. Anyhthing out there is worth more than few pixels.
It is stupid to impose your own (skewed) values on others. Games are there to give fun. While achievents in them should have some value, that value should be based on players own feeling, not on peer pressure (which means that player should not look onto thers and compare what it took them and what it took him to get that reward.). And that feeling should be based on over coming challenge or simply on workd well done, not on ability not to fall asleeep or on ability to resist pain of carpal tunel.
Elite players should have way to differentiate themselves.
In that case, it should be by deeds, not by possessions. Just like good plumber and bad plumber are set apart by work they do anbd not tools they use, Elite players should not be elite only because of extensive gemaply time, but because they are genuinelly good players.
Basically, you should not deny fun or power to other people. Want ting to do that can be called only selfish.