What reason beyond wanting to be President does somebody need to run for President?
None, but it would be helpful to articulate how you are going to change things if you become President.
In the preliminary stages before she has even formed an exploratory committee? That's an absurd demand. Meanwhile, Scott Walker is just giving speeches about how much he loves to shop at Kohl's.
A policy platform to deliver to the voters is something that is months away, not now.
Anyone who is paying attention already knows where Hillary stands on the issues. Apparently some people think that unless you have some stupid focus group tested "inspiring" slogan, you have no rationale for your candidacy.
Don't worry guys, the vacuous slogan will come eventually. Until then, you'll have to make due with actual substance.