DR2.0 launched with roughly the same amount of content as DR1. Same number of rally locations (all new!)
If we really want to be pedantic, Spain isn't new. It's the same location and area as it was in DiRT 4, with new stages, meant to serve as a corollary to Germany as a fast, all tarmac rally, because of the supposed inability to license out stages in Baumholder and other WRC locations. That has proven to not be the case, and now Germany has been put into the game.
more rallycross locations
For a game which ostensibly is about stage rallying (and what I'm sure that 85% of people who bought the game would be buying it mainly for) the fact that this is where the vast majority of new location content has resided is really quite insulting.
At the time DR1 was released, did you feel that it was "unfinished"?
No, but that's because DR1 was such a radical departure from the previous mold of DiRT games before it. This was a game that was more or less built from the ground up, with a new physics system and placed in Steam Early Access, where new cars and locations were added piecemeal to test before a wide scale release on both PC and consoles. One can be charitable and consider the Early Access content added into the game to be DLC, and that the content that was in the game was what Codemasters wanted the gold copy to ship with, even though it could have been added onto. DR2.0 doesn't have that luxury. This is a full retail game with no Early Access period to fall back on, that has a DLC plan in place, and as such, can be criticized for not delivering new content and feeling unfinished.
And even if you did think that 6 rally locations wasn't enough, it's not like the number was a closely-guarded secret; everyone who bought the game knew exactly what they were getting.
It wasn't good to have 6 locations then, and it certainly wasn't good to have six locations now, especially when one considers that the vast majority of post-launch DLC for DR2.0's stage rally roster is stuff that I can play in the previous game, instead now I have to pay separately for them.
Also, SLR Evo had eight locations to start with. WRC 8, even with it's official license, has infinitely more locations that any DiRT game before it, and has stages that are just as long as anything DR2.0 has thrown at it. Even if we 'knew what we were getting' it still isn't enough compared to it's recent competition.
The amount of defending that goes on for Codemasters is insane, and yet if this was any other developer, the EAs, Ubisofts or Activisions of the world, there wouldn't be this amount of defending an obviously problematic DLC structure. Again, there is no problem with DLC in a simple sense. Where the problems start to lie is developers reselling cars and locations especially from the previous game, and making it the vast majority of the post launch content, especially when it revolves around the post launch content that people are mostly playing the game for, that is, stage rallies.