I would agree, except in the Genesis version the only difference between the two is that the shaman has one less usable inventory slot and there was no difference in the SNES version. The difference between the two in the pnp game is pretty much only role-play elements (at least in the first two editions), and that does not translate to a video game that focuses on abilities and group dynamic well. I feel it would be a waste of memory to have two seperate names for what is essentially the same character class.
Most mmorpgs have defined group roles based on class, so it is easier to find group members. That way, my message of "troll shaman lfg" won't have to be answered with questions like "What kind of shaman? Heal or dps?" Or "wht lvl r ur healz?" before a group can qualify me as a group member. That is part of the problem for shaman characters on WoW since they can be specced to fill several different roles. Everybody knows what a samurai's job is. It's to smash people, shoot people, and if this game is like all the other mmorpgs out there, to absorb agro from whatever the group is attacking, so when a samurai player is looking for a group, everybody knows his role and the only question he might get will be "How much damage do you do?". I shouldn't have to have my spell list inspected every time I'm looking for a group to make sure they all approve of the way my character is built. Not having defined group roles for casters will make it more difficult for both caster classes to find groups, and every mmo needs a healer class. That's why I made the suggestion.
I do have faith that everybody will be satisfied with whatever the programmers decide. I'll personally be happy just to play a shaman in the Shadowrun universe no matter what. I just wanted to voice some potential snags I see coming in respect to character playability.