Ironic that you mention the "packs", kickstarter and a wise way to start it, was on my mind last night. I was debating going the kickstarter/greenlight route, with this new Earthbound/Mother project. I've never tried them before, but it did cross my mind last night that it may be a good idea to do some asset/music packs, to maybe get my feet wet and see how it works. I see a lot of those project's having trouble gaining a following/funding without first advertising.
I'm not sure what the best route would be; either doing a kickstarter for the packs, then releasing them for free for use in commercial/private games, or just charging a bit and doing plug and play matching packs for music and assets. I thought it might be a neat idea, to do a kickstarter on the project, and if successful, maybe give all the asset's away used in it, to the community for private/commercial usage. Great idea though, it seem's like a fun way to get some following for the project, experience with the programs, and help out the dev community. Unfortunately it's all new to me, so I'm not sure of the wisest path yet, but definitely a cool idea.