[+] : One of the things I really like are sidequests. They give me the gratification, that i cant always get from stuff like getting new jutsus, or leveling stats to max, that can take days/weeks/months.
[-] : One of the things i dislike is some abilities not scaling with things they (probably) should scale with. For example genjutsu dont scale with spell power (from my observation), medical damaging abilities and healing doesnt scale as well or fire tornado scales with attack power for some reason (from what i have heard). There might be more like these, but i dont know about them.