I agree with you, but Trump, like him or hate him, he has the star factor. Those kind of things are like charism which few people are gifted with. You either have it or you don’t.
In that sense, Trump is set apart from most other politicians presently. He is able to have people noticing him which is an important factor for a public leadership figure.
Pence would come as a decent person and would be acceptable to most people, at least character wise. But should he be President, he would need strong party and strong support from everybody. Would he be able to change and move people’s opinion? Probably would be difficult.
EDIT:
As it is now, he is very much a side kick to the President to smooth thing out when there is some problem where his presence would be more appropriate. Otherwise he still lack the necessary large following of his own.