Reading the recent article on the BBC, Hamilton readily mentioned that he will coach Russell for the future, I hope Russell takes this onboard.
An offer from a seven times WDC to support you to work together. Being a romantic, would love a Cevert & Stewart honour relationship. I think Russell will be quick in qualifying, race pace, an unknown. If Russell uses his brain and plays the long game, learns from the Alonso and Hamilton fiasco, the pair could become a formidable force for MB.
Hamilton shook Verstappen (the latter will never admit, destroyed him at the last race) although Verstappen now a WDC has been very complimentary of Hamilton. I think Hamilton will stall his decision, until the unveiling of the new car, also I would guess, would want reassurance from the FIA that he wont be shafted again. If it had been Alonso in Hamilton's position and got screwed, Alonso (or Ferrari) would have imploded and be hunting down each individual responsible.