Hi Ping Ping, well cleaning is all down to the users preferences as with most things. If you use a top loading draw or lid then this process is relatively easy, for those who have to remove 7 or so screws to remove the top cover and flip the puck out of the way, less so. I have not witnessed the same static build up on laser assemblies that vinyl records attract being slipped in and out of cover sleeves ( Dany or Oz might want to chip in here) as a laser is a non contact device. I use the wine glasses as a timing device for laser cleaning at chez V as it is a convenient check readily visible.
For me the greatest gains in lasers is to be had from a dedicated low impedance drive circuit with the addition of the recently discovered decoupling cap right at the laser diode pins (huge difference and the cheapest improvement ever along with the reef knot in the mains feed cable IMO).
The laser sled is a delicate device and not one for the unwary, heavy handed club. Remember to remove all power cables when removing covers and for swing arm sleds, hold in place prior to applying cleaning and buffing the lens. The transport screws just hold down the sprung subchassis and does not secure the sled.