Not being from TX, Hutchison has the image of a wishy washy person who stands for nothing but going along with other people's agendas. She does not project being a "leader".
Historically, governors, not senators, have been the best candidates. What GOP governor is going to emerge with a reputation, a following, an issue, an agenda? with something that will attract supporters and media?
Don't know but there has only been 1 senator elected directly from the senate in about 100 years.
Voters want someone with executive experience.
All the "comity" and I say that with as much derision as possible is the exact opposite of what you want as POTUS.