Let's look at some of the major decisions and issues of the past 4 years and ask how they would have gone with a less decisive president:
- Afghanistan: after 9/11, there was no ambiguity anywhere that something should be done, so even a rather indecisive president would have acted. There was international consensus on Afghanistan and the Taliban, so our hypothetical less-decisive president would have invaded there as well.
- Iraq: there was massive resistance from many quarters on Iraq, so regardless of whether our indecisive president was personally in favour of invading Iraq or not, he would have hesitated. He certainly would not have brushed aside every criticism, suppressed every dissenting voice, demonized every opponent to the idea as a traitor, trod all over any allies who objected, etc.
- Gay marriage: regardless of his personal stance, a less-decisive president would have probably left it to the courts, rather than declaring a political crusade on homosexuals.
- Stem-cell research: even if he was against it on a personal level, a less-decisive president would hem and haw about banning or strictly regulating it, which would in turn effectively condone it.
- Science and the environment: a less-decisive president probably would have let the science councils researching these issues operate pretty much independently, rather than sacking anybody who said anything he didn't like and trying to stock the councils with people who would walk his party line.