I've been to one game there. Only stadium that ever made the Metrodome seem like a palace. Everything about it screamed 1975, including the official soft drink: RC Cola. Meanwhile the Giants stadium might be the nicest one I've ever been to. That dynamic can't work out in that market forever.
In general MLB has to be bit worried. It's this bad now, imagine if the lockout had actually cancelled games...
I haven't seen a baseball game in the Oakland Coliseum, but did go to a Vikings game there in 1996, and thought was a dump then.
As bad as the Metrodome was, there are 2 ballparks I went to that I thought were worse.
- Olympic Stadium in Montreal, essentially a bigger more cavern-like version of the HHH Dome.
- The Big A in Anaheim, before they remodeled it in the mid-90s it had 65,000 capacity for baseball. Even a crowd of 30,000 made it feel empty. After the Rams bailed they gave it an overhaul, it's not that bad now.