Dustin Curtis has some ideas: http://dcurt.is/the-future
I have checked out that list and truthfully, it's a pretty awesome read but well, again, I want ideas for software/websites/apps and that is a pretty assorted list of things Mr. Curtis wants and not something that I can, atleast in the skills I presently have, can make with ease :)
P.S. I have saved that list to my Pocket and will be quite surely reading it from time to time...