I run dual monitors and have noticed with much dismay that LiteStep looks broken and rather unattractive when stretched across multiple monitors. Will future builds of LiteStep include the ability to stretch the interface across two monitors?

well, as u could have read in thousands of other posts (hint, hint!!), ls doesn't support multi-monitor systems. it can be adjusted to work with mm, but in a really crappy way. if u want to find information about adjusting your themes to display correctly on mm systems, search these forums. there are tons of threads about that.
i have heard rumours that if ls is going to support multi-monitoring, it's going to happen in the next version (that would be 0.25.x). until then u probably have get along with the old and rather annoying way.