I think they actually relaxed it a bit. I recently wrote a review and I found it to be a little easier than my previous time doing it. I agree though, the limits should be removed. Valve doesn't character limit theirs, and most people over there just throw up one-liners anyway.
GoblinFX: I hear you. I just spent an hour working on a review for FTL. No warning it was getting too long. I was actually trying to keep it as short as I could, and then all of a sudden, the site tells me it's too long. Really sucky way to do it GOG.
Edit:
I just looked at my review. It's about 3/4 page typed and it's just over 2,600 characters with spaces. So, what GOG is saying is that a ONE PAGE review is too long. If this is the case, what's the point of even reviewing. I agree with other posters. You can't get a good idea of whether you want to play a game or not with nothing but super short comments. I can't really call them reviews with such a short character limit. With the average small thumb drive being 4GB, there's no excuse for this limit.
What really galls me, is the most helpful review for FTL is 3,430 characters long. That's more than double the current limit.
this is the real problem though. if you just had some way to know what you were doing with the limit then you could write your review and they could have the small reviews.