Haskell could still benefit from a larger community. We have had to write some key low level tech, but we have been able to do so at an incredible pace.
The /dev/urandom bug mentioned was caught by us because we are one of the few places using Haskell that also has a fairly large user base. If the community was larger we would have run into less issues.
That said, we have run into a surprisingly few amount of issues :)