Officials promote Special Improvement District proposal in advance of December 30 approval vote. Dover officials pledged that SID status would help create thriving storefronts in town. (DOVERNOW Photo/David Arredondo) While town officials are eager to promote a new initiative that would designate downtown Dover as a Special Improvement District (SID), local business owners are seemingly apprehensive about a piece of legislation that feels, to some, like a late-season tax hike