Linux developers by and large don't care what distro or software comes preloaded. They intend to replace it with their favorite setup the moment they take the machine out of the box. What they want is a keyboard designed for productivity and hardware that is fully compatible with the Linux kernel. Some will only use free (libre) drivers. Some want a large touchpad, others just want a pointing stick, and others don't use a pointing device at all. Many want easy access to the inside of their computer. Then there are always the regular consumer issues like how pretty the machine is, does it have bluetooth, an optical drive, etc. All laptops have a tradeoff among portability (size and battery), performance (CPU, GPU, RAM, and display), and price (low is good). Most great laptops only excel in two of those categories. Different developers choose a different two.