My take on citations for local search is that they're dealt with by an algorithm other than the organic algorithm, one which looks to verify the correctness of the NAP and qualify the sites upon which the citations are found and that the sites where the citations are found are disregarded by the organic algorithm. So, if citations occur on a bunch of local database sites, like yp.com, for example, and they also come with links, the fact that it's a site dealt with by the Local algorithm means that velocity of links add isn't an issue.
I could be wrong though. I've been wrong before. : (
How many citations are you adding in what period of time?