Weight for the base unit can be found in MARA.MARA-BRGEWMARA-NTGEWIf you want show weight from MARM instead for any reason, simple connect RESB-MEINS with MARM-MEINH.
First of all, good work and nice overview.
Basic EWM or full EWM can both be run as embedded. In your comparison you compare it with the full embedded EWM. It would be usefull to add basic embedded EWM to that list as well.