Peds anesthesia fellow close to graduating here.
From a peds anesthesia perspective jobs are pretty good in large cities. Obviously you get paid a lot less in bigger cities vs smaller ones, but its still not too shabby, with an average salary of >250k/year. Go out to the midwest/south and you'll see some places are paying ~350-400k. I don't recall many practices I looked at incorporating large amounts of crnas, and many places had attendings doing their own rooms several days out of the week.
Peds cardiac seems to mostly attg only but there are a few places that have a small amount of CRNAs that help out.
It doesn't seem like CRNA infiltration in pedi anesthesia is as bad as it is with adult outpt centers at all.
If you are willing to take a pay cut in the long run (peds anesthesia guys usually make the same or slightly less that general anesthesia guys), and can afford to lose a year of attending salary I would highly recommend it. The skill set you learn and comfort level you gain with the <1 yo group seems to be in high demand. For single people with no children (like myself), and a moderately high debt load (~$110,000 from med school) it wasn't that much of a sacrifice.
I love anesthesiology, and I feel if I had to do it again I would. For newbies considering the field I probably would consider doing a fellowship however.