Yeah, all of the manual casting (which I feel like sometimes takes more trial and error than it should to get to compile) and the awkward null checking are the

Yeah, all of the manual casting (which I feel like sometimes takes more trial and error than it should to get to compile) and the awkward null checking are the two most painful points. The debugger being basically useless is a problem, but it's something that will get fixed eventually. I have less faith in the first two points though because initially they were less painful but in later betas they became more painful.