Currently we need to switch to classic if we need to update the relationship settings of a lookup field. The only settings we can modify in Maker Portal is the Relationship name and in the Relationship component, the Behavior Type (Referential, cascading, custom) and the Delete behavior. Need to add all other settings such as Display Option, Searchable, etc to bring Maker portal at par with Classic. Would be great if all of those settings can be set at the same time as the Lookup field is defined so that we wouldn't have to navigate back to select Relationship component.
Also, Maker Portal should not truncate the Relationship name by default.