Well, at first I was going to say "eeeewwwww!" at the idea of blue ricotta - the flavor possibilities just don't sound that appealing to me. But since you made it from the whey from that cheese, maybe it wouldn't be so bad? I suppose it depends on whether you mixed anything else into the ricotta (other than salt). From what I remember of those threads, they used leftover actual curds from the cheese (whatever wouldn't fit in the mold) - had I known that at the time I did the make on my first one, I wouldn't have weighted it to get the rest of those curds in. Probably also depends on whether you plan to cut off the rind whenever you eat it - in which case blue-flavored ricotta would sort of be a non-issue.
I will say, though, that one of the most helpful comments from those threads was the one that said you're basically taking bits from the parts that stick out and using them to fill in the holes. Once I realized that I didn't need to be afraid of a little scraping, it went a lot easier. Plus once I got enough water onto the bits around the holes, I could essentially fill them in with themselves. Took me maybe 20 minutes to do that first one (first time and all), but it was worth it.