I respect those viewpoints and it's certainly not outlandish for users to come to such conclusions. However, I thought it'd at least be worthwhile to state that I have felt the opposite in regards to the rally locations. I came in with the understanding that the locations would be limited (as they were in Dirt 2) but I feel the rain, snow, morning, day, and night driving helps turn what may seem to be a limited group of locations into something that feels much more varied and new. In Michigan, for instance, it feels to me as if there are at least 10 different variations of tracks (actual track variations - meaning different paths, roads, etc) on top of the weather alterations. This is contrast to Dirt 2, where the rally courses felt much more limited to me.
Gymkhana is the biggest surprise to me. Like a lot of you guys, I was banking, praying and planning on a bunch of rally. That's what I was looking for and that's what I was interested in. So with that, even with a pessimistic eye, I was surprised with how much I really did not mind the Gymkhana mode. There's no doubt the mode felt super loose in comparison to actual rally races (my car felt like it was spinning all over the place) but somehow, through a medium amount of practice, the Gymkhana cars begin to feel comfortable and one's skills can quickly become very capable. So as I said, I wanted nothing to do with Gymkhana at the start, but it's been a pleasant surprise. The cars seem to handle better with experience.
Finally, I feel you on the YouTube voice. I've been quite tolerant of it thus far; I just don't see the point of it existing in the first place (aside from shilling YouTube, which may be reason enough).
Into the fourth season, I continue to have a lot of fun with this game. It's great to me.