I would think that having Common Name and Aliases attributes would be useful.  I think that some attribute is needed to represent the Gene Symbol that would be associated with a Node.  Do you envision replacing Common Name with a ''Label'' attribute?  

Also, a number of analysis and search routines may need to know what the aliases for a node name are.  Perhaps we may want to define a set of ''default'' attributes that are associated with every Node (and/or edge).

(comment above posted by Allan Kuchinsky)

Yes exactly, Common Name would be replaced with a Label attribute.  Having a set of default attributes with every Node/Edge seems useful to me.