Wild card searching. We've been using Spiceworks for a couple of years. Purchased Lansweeper for software compliancy and I really miss the ability to start typing in a portion of a PC name and it display all assets with similar characters. We use asset tags numbers for our PCs with letters to specify location. just typing in that number with the auto populate like devices is nice.
Help desk! With help desk though, tie it in to the assets. If a computer crashes you can easily create a help desk ticket associated with that device. If it happens again, you can easily see that the asset has a help desk ticket associated with it for quick reference.
Outside of that, Lansweeper does what we need it to do and we love it!