Nutcracker
Stop Brexit!
...
2. Preference to deal with the whole Red Crossbill complex at one time. This seems like it is really an opinion situation more than anything else. I would say that, while preferable in some cases (like has happened with groups like the Yellow-rumped Warbler before), with the holarctic monster that is Red Crossbill, I suspect that we might have to wait another hundred years for such a complex-wide solution. For such a complex situation (pun!), I think piecemeal splitting is more appropriate, rather than wait forever. When we have data that supports at least one taxon of the complex that warrants species-level status separate from the rest of the complex, we should split that taxon. Also, for what it is worth, this particular population of crossbills likely won't wait around 100 years for this ultimate solution, and will instead likely shortly be extinct as written about [here].
On the suggestion of piecemeal splitting, including samples of nominate L. c. curvirostra (from e.g. Sweden) should not be a problem, and would be a major improvement to the study.