This might be a bit of a transition period for Spurs, which is not necessarily bad in the long term.
1) Transfers: Underwhelming but understandable. Sold Wimmer, got Davinson; looking to get Aurier for Walker. As for a winger and back-up striker, they continue to trust Janssen, Sissoko and N'koudou and are hoping Lamela returns well from injury.
2) Wembley: Will cost them a few points, already has, but Spurs aren't West Ham. The Chelsea performance was solid. Only difference it will make, imo, is turning them from outsiders for the title to favorites for fourth.
3) Underpaid and unmotivated players: Considering this is a world cup year, it shouldn't be a problem. The English contingent especially, will want to show the possibility of a Spurs spine for England 2018. After the World Cup though, we might see a bit of mini-exodus, biggest departure being one of Eriksen or Alli.
4) Not 'kicking on to win trophies': This is slightly unfair from us rival fans on a club that is moving in the right direction. The present team is quality and, yes, it will be an opportunity lost if it doesn't win a trophy.
But it is not the be-all and end-all for Spurs fortunes as a club. Investing too much in one league title might prove too much of a strain and they could return to where they started with Pochettino's arrival.
Poch and Levy are looking to take the club forward as a whole. They are likely to consolidate the club's position before taking the next step, so that when they do become serious title contenders, they remain one. There is a danger of becoming the next Arsenal, but as long as Pochettino remembers he wants to win things, he wouldn't become the next Arsene Wenger.