Originally Posted by psylockolussus
The franchise might get enough money to warrant 2 to 3 films in the future, but business-wise, they shouldn't settle for characters/cast that are less appealing to general audience.
Thats like asking a casual viewer, to pick the cast of Star Trek Generations over the original Star Trek cast.
As others have said, the logic in what you're saying is flawed.
The casual viewer doesn't already know which of the X-Men are 'popular.' The films made Jackman's Wolverine popular (but not enough for Origins to beat X2 or X3 at the box office). Just like the casual viewer had no clue who Iron Man was before Downey Jr nailed the role.
These films can make characters popular by giving them strong roles. If Cyclops had a powerful central role he would be super-popular too.