*whistles* Boy, have things changed. I started roleplaying on this site about five to six years ago. Things such as writing ability have obviously improved, just as you said. However, I also find that I feel much better as a person. I used to be very shy around people, both irl and on here. I always found myself RPing with the same exact people over and over. I don't exactly regret it, but I'm much happier knowing that I've spread out across the forum and will now RP whatever catches my fancy.
I have also noticed that I play a wider variety of characters now than I had originally. I used to play literally two separate characters, a boy and a girl, in literally every RP i attempted to do. Same personalities, appearances, names, and even histories depending on the roleplay. My characters are much more fleshed out now. Obviously, they all have some similarities being my characters, but generally, they all have their own distinct characteristics that divide them. I also play quite a bit more females.
I also used to highly favor Pokemon RPs, but that died down quickly. I will often find myself looking for something high fantasy or sci-fi nowadays. I won't even dare touch the topic of dedication and activity though. That's too scary for me to admit.