I noticed that the "SHD" standard has not been implemented in the XDCAM node.
The SHD standard is just a normal XDCAM 1080i but with 85Mbit/s.
Format: XDCAM SHD
VideoFormat: MPEG-2 ES (ISO/IEC 13818-2)
Level/Profile: 422Profile High Level
GOP: Long GOP; N=12; M=3; pattern: IBBPBBPBBPBB
Chroma Sampling: 4:2:2 planar (yv16)
Bit Rate: 85 Mbit/s
Constant Bit Rate: Yes
Picture Size (active): 1920 x1080
Aspect Ratio: 16:9
Frame Rate: 25i
Scan Type: Interlaced
Sequence Header: Before each GOP
Field Encoding: Top field first
Bit Depth: 8 bit
Timecode in GOP header: Not in use
Color Range: Limited
Color Matrix: BT.709
XDCAM SHD (Super HD) is not very common, still it's used by some companies.
I think you should add the possibility to increase bitrate from 50Mbit/s to 85Mbit/s and leave the rest of the node as it is.
I could just use the custom ffmpeg node, but I don't think it's worth it 'cause I would lose all the conditionals you set inside the XDCAM node to handle all the kind of conversions.

Kind regards,
Frank.