I note that I get most enjoyment out of developing my character, and seeing them grow!
Once growth is limited, so is my enjoyment.
Growth comes in a number of ways:
1) Physical or Stats and Skills:
Self explanatory and this is generally well done.
2) Understanding / Knowledge / Plot lines:
Again self explanatory. You can see development in understand in all plot lines, where you discover something. This is another form of growth.
3) Social or Political (Fame):
Another form of growth is in social circles / vocational growth / climbing social and corporate ladders / climbing guild pathways. This involves developing relationships, and specific sets of skills in communication and technical skills. Starting in a guild or faction with negative privileges and rising to higher privileges as time goes on.
4) Moral Development of the Character:
I can't think of an example here. Perhaps others can. But basically I see it myself, where as games go on, I don't want to kill everyone. I just want to persuade, or knock unconscious people. I get sick of killing. Perhaps the characters moral compass could somehow be included through plot or quest choices, where certain choices are not available when the character is of good moral codes.... etc
5) Emotional development of the Character:
You see this in games like darkest dungeon. If you kill people all day long and see people dying all the time... I suspect you will either go crazy or get very depressed. Being in a dangerous area all the time pre-disposes you to anxiety / hypervigilance / Post-traumatic Stress disorder.
It would be great to see emotional state enter the game in some form.
6) Material Growth: We sooo live in a material world. And growth in this area means you can live in a good house with all the mod cons, with the best weapons and armor. I hate the way that material goods in these games are sooo overpowered (OP). I do hope that growth in material things be balanced with other ways that characters grow in the future games.
I can't think of any other growth areas, can anyone else?