Apart from Kane getting injured ten minutes in I cannot really complain about today's game against Millwall. All players who needs to step up when Kane is not on did today. Son scored a great hat-trick which must have felt great with the Millwall scum shouting racist slurs at him all game. And Janssen finally got his first goal from open goal, and you could see how much it meant for him and for the rest of the team when he scored.
Speaking of Janssen I think they kind of nailed how to use him with this game. He's not as technical as Kane, Son or Eriksen, who can produce their own goal opportunities yet. Since he comes from a league using the 4-4-2 system more and he's used to having balls delivered to him. So if I were Spurs now and Kane is out for a while, I'd start with Son as my striker, then put out Janssen on like today, with 20-15 minutes left and the defense starting to tire. Using him as a power sub. Because he has the strength and the cardio to outdo the defense then. And just have the midfielders feed him balls. Just like they did today and as we saw today, it paid off.
Granted there's a difference between PL teams and Millwall. But if the shoe fits. I think that's a system that would get the most out of Janssen. He's not going to score if he just gets five minutes, or just stoppage time. He needs 15-20 minutes of play. And you don't even need to take off Son since you can take off a midfielder for Janssen and move Son out on the wing.
Aaaaand I realize I have put way too much thought into this.