I'm in the process of swapping one computer into a cheap temporary case for the time being. Perhaps I'm just out of touch with how things are done now (definately possible), but I was surprised to see that there were no motherboard standoffs included. Instead, there are little raised metal "bubbles" that looks to me like they want me to screw the motherboard directly onto it. I've checked the traces and leads on the back of the motherboard and it appears that I won't be shorting anything, but I've always used standoffs before. It just seems wrong to be securing the motherboard directly to the case, raised or not. Is this something that is done now? I'd rather be overreacting and have everything be fine then risk shorting the motherboard to the case. I'm linking a picture below to show what I am seeing.
If the rear panel and connectors line up properly with the rear face plate, the pcie and pci slots are at the proper height to insert and secure your add-on cards, and the motherboard seats square and properly, the using the bubbles instead of stand-offs should not be problem.