Hi Jeff,
I didn't make any meaningful progress with the crested roses. It is a problematic endeavor; offspring are often weak and/or unhealthy and by the time you have moved into the second generation (from cristata) most of the cresting trait has vanished. I believe the only way to genuinely cement the trait into breeding lines is to back-cross first and second gen hybrids, selecting only the healthiest, strongest plants with abundant cresting. What this means is that for at least one or two more generations, pinks are the only possibility, and remontancy will be hard won. Is such a thing worth pursuing? Probably, for someone willing to dedicate a decade or more to this single goal.

That said, it is worth noting that sterility becomes a huge problem with this line of breeding. Most hybrids from cristata suffer from some degree of sterility. 'Crested Jewel' is the lone individual that doesn't have this problem, but you can be certain the problem will surface once you start crossing 'Crested Jewel' with other varieties. (I have seen it in my own work) You can expect to be roadblocked many times in the search for fertile, healthy crested roses. 'Crested Sweetheart', as lovely as it is, is absolutely sterile. Don't even consider it as a breeding opportunity; its not. It will not make seed, nor will you ever obtain fertile pollen from it. If you want to pursue this trait, start with 'Crested Jewel'. Do NOT cross it with modern Hybrid Tea/Floribunda types; I believe this is where many of the problems arise. Try crosses with more obscure classes of rose, especially primary species hybrids (where at least one parent is a species); this may prove more useful. My only decent crested hybrid from my work was the result of a cross of 'Crested Jewel' and 'Marbree', a remontant Damask. I was lucky, since it has the traits I wanted, decent health and good vigor, and it is also reasonably fertile in both directions.

Good luck if you choose to pursue this difficult task!
Paul