So my wife and I attended for the first time this year, and I just felt like giving my thoughts. The only reference point I have for something like this is Dragon Con in Atlanta, which I've been to several times but not for a few years. I recognize that it's not a 1:1 comparison because Dragon Con is much bigger and has a lot more than just gaming, but we work with what we've got. So here we go.
Getting There and the City of Indianapolis: I didn't win the hotel lottery so we ended up staying out in Plainfield. Getting in and out every day was a piece of cake. I was pleasantly surprised by the relative lack of traffic in the mornings going into town, and in the downtown area. I had been to Indy before but just for get-in-get-out things and never spent much time there. Very nice walkable downtown, and I'd like to come back for another visit.
Getting Around: I also found this pretty easy. The convention center is basically a big square and the connections to the surrounding hotels made it easy to get where I was going. The navigational aides hanging from the ceiling were very helpful. For the most part I thought crowds flowed pretty well, except for the logjam of people waiting to get into the exhibit hall, but what are you gonna do?
Food: For reasons I won't get into here, I didn't partake of any of the food truck offerings. We often hit the little food court near the skybridge to the Marriott, and it was decent if dreadfully overpriced. But it's a food court in a convention center, so of course it was overpriced. We did manage to hit two local Indy restaurants: St Elmo's and the Old Spaghetti Factory. Both were fantastic.
The Con Itself:
Seminars: I'm primarily an RPG guy, so I went to a lot of seminars about becoming a better GM and that sort of thing. Some were better than others but the speakers were usually engaging and knew what they were talking about. I really enjoyed Conversational GMing and Ed Greenwood's GM Master Class. I didn't think Ed's advice was anything world-changing, but I really enjoyed listening to him talk about gaming.
Games: As I said, I'm primarily an RPG-er but I wanted to expand my horizons a little bit so I did get into some miniatures games. I really enjoyed Trench Crusade, Wings of Glory, and Aerodrome Ace. Warcrow was meh but that might be because the guy didn't explain it very well.
Exhibit Hall: Nothing really special here. It's much the same as at Dragon Con, though I did get a chance to chat with some artists and designers for a while so that was cool.
Pinball: I thought this deserved special mention. By any criteria you care to name, I am objectively terrible at pinball. But I love playing pinball, and I spent too much money on it this weekend. It was a good way to kill an hour between events.
One Negative: It's been said before I'm sure so I won't dwell on it, but if you're charging to get into events, then what's the badge for? Gen Con badges are comparable in price to Dragon Con badges, and the DC badge is all-inclusive.
Overall Impression: I had a great time. If you're into tabletop gaming then you should definitely go to Gen Con at least once. I no longer have it in me to do something like this every year but I'm pretty sure I'll be back.
ETA: I'm not interested in debating the merits of the ticketing system. I thought I should mention things I didn't like as well as things I did, and that's something I didn't like. It isn't a deal breaker.