Several opportunities surrounding this
market:

1)a matchmaking service for seniors and
companies who want to employ them in the
geographic location where they live...

along your idea of small business development:

2)why wait until they retire? why not reach
out to the "pre-retirement" folks or folks
who want to work in their retirement and do
some type of self employment opportunity "part
time"

what about those with disabilities?

some people retire early because of physical
impairment:

3)design programs, software they can use to
assist them with their home business opportunities..

Just a few thoughts...