One thing I'm liking more and more about SMT games in general is the knowledge you acquire in one game can be passed over to the next. So far, I can say I've played a good number of SMT games and in some I've been beaten to a pulp (Nocturne) but still there's always something you learn.
Now I'm 2 fights away from beating Devil Survivor 2 and I'm impressed with myself how better I'm fairing at this game than it's predecessor. It's not just the character build but how to abuse enemy's weaknesses and defenses, how to fuse better demons with skills you need, etc. When I beat P4 Golden late last year I felt the same thing, how better I was in my second run, I remember Mitsuo being so difficult the first time but in the 2nd, not a problem at all.