I would launch my own Steem based project/dapp and utilize a large portion of the SP to further delegate out to new comers on the platform, and take the rest as a reward pool for upvoting solid content produced by these participants.
During this starting development prior to Alpha release, I would take advantage of the delegation by posting Steemit articles relating to the project (ie. purpose, design, dev updates, etc). This would be to attract attention and following around the project, develop a true presence on the Steem platform (which is extremely difficult to achieve organically at this stage of the platform when refusing to pay for it), and also earn additional SP which can be fed back into the my dapp upon its release.
The project will have an 8-10 week initial dev cycle prior to Alpha release. I actually have documentation and a cofounder (also a software dev) who is willing to tackle it with me, so this is the projected cycle given current scope of the project.
While a hypothetical exercise, I would eat that shit up!