I suppose in these threads one should disclose their bias up front. I'm a swing voter, liberal on social issues and conservative on fiscal policy. I really have no idea who I'll wind up voting for this election cycle.
Positives of a Clinton administration....well, I suppose it's what you define as positive.
Stability: Clinton represents a continuation of existing policy that has been in place since the 1990's. She's a known entity that is willing to be flexible with changing views on social issues (for example, being completely against gay marriage until the view became unpopular). Her foreign policy will be a continuation of military and diplomatic policy we've had in place since 9/11.
Continuation of current economic trends: Despite some rhetoric to win the nomination, it's safe to say that she would be the choice of most people on wall street. Although the growth in the economy has been anemic for the past decade and a half in terms of wages and job growth, there has been consistent growth for most sectors of the economy. Clinton has been on board or most trade agreements, and is generally in favor of more globalization for the economy.
Maintaining the Affordable Care Act: The ACA is going to have some difficult periods ahead of it. The individual mandate is going to start increasing penalties (in nature of full disclosure, I'll find myself in a situation where I can't afford coverage, and can't afford the tax penalty next year. I'm still not sue what my best option is.) and the burden of funding the ACA will begin shifting to individual states. It as set up to get people adjusted to the goals without the cost being paid upfront. If you support the ACA, the only way it will survive in it's current form is if someone is in office who has a stake in it.
Preservation of stable election cycles: the Clinton victory will "prove" the conventional wisdom that outsiders, people with "crazy" views, and people without the support of their party cannot win a general election. Although this will lead to more "boring" candidates, it does prevent an actual dangerous person from every becoming President. Of course, it also prevents either party from changing. If this is good or bad is a matter of choice.