Totally agree with you about Eklund and where to make him most effective
The disadvantage I think with putting a lefty player on the right wing(or a righty on the LW) is you minimize his deking ability, unless you are particular skilled at fallaway floaters, like you mentioned. Sandstrom is awesome on the right wing with his right shoulder facing the net because he is a tremendous shooter and can hit the tight angle shots or narrow windows. But can you find the spacing on the ice to nail the shot without a defender hitting you ? That's the challenge and also getting the shot off before the opposing manual goalie activates. I think the question of whether to put a player on RW or LW comes down to agility and shot power. If the player doesn't have a great shot but has great agility, like Lafontaine or in this case Eklund, put him at the wing that matches his handedness. This way you maximize a players deke capabilities, because floater shots are not high percentage in my book.
My 2 cents