Quoted from The_Dude_Abides:Non ghosting LEDs would be a necessity for me.
If you can make a good variety of non ghosting in retro/frosted/clear domed/flex bulbs in all colors for cheaper than the competitors you would have a lot of pinheads ordering from you. The key is having that variety, until you do it may be tough because many of us want to go to one place to get all the bulbs we need instead of two or three.
+1