specify direction per connection about tala HOT 1 OPEN

I played a bit with the new position keywords, which are really helpful. Looking at this graph

https://play.d2lang.com/?script=jJLBaoQwEIbv8xTzArW2aS-hFAQpPcVCnyDIqDmYSJIFl2XffcmysEGN8Sb4_fP__2QqPxo3DWQJv16-8f9kO9kSNi1JXQjlrelJ44-aZXgYjuIdMgyuxvwNxht31n4gpxxH8fsBe0SYUBNNkYPqVPtI0Ni-QAEpYCGuScd_Xystx9HMIQSDPLcus72TvTS5ZTA4EITjBRC9mTiWgBiONHxdIWm9qWDlXZOtlDLb73LQMALfymSbiGKfC-p5tcmotwAAAP__&layout=tala&sketch=0&

From a design view, would it be difficult to have an option to render boxes that share a hirarchy to be of equal dimension? I.e., the outer boxes would be off equal size, and thus appear much more harmonious and aligned with each other.

I haven't thought this through, but probably something like a size_ref: keyword so 'Atmospherecould referencesurface ocean. If set to group` it would use the size of the largest box in a given hirarchy

from tala.