There are upgrade kits that are worthwhile. The plinth of the original machine is a weak point, as well as the arm and platter pad.
It has a robust drive, which is important with any turntable. That is the main reason the 'table has a following, just like the Garrard 301, Empire 208, Technics SP10 and a few others.
You can damp the plinth, but the problem is its not particularly rigid, and the coupling between the platter and the base of the arm is pretty important to reduce coloration. To that end, the plinth as to be both very rigid and very acoustically dead. In this way, if the platter is vibrating, the base of the arm is vibrating in the same plane and its a lot harder for the cartridge to pick that up. So it has less coloration.
The original idler should be replaced in any event.