You've got to let the players develop into quality players we have one of the youngest squads in the Premier League. Sure, we all miss the days of VDV, Modric and Bale. While Lamela might not have the potential to be as good as Bale he still holds it in him to be very good, he's only 22. Eriksen is all round probably already a better player than VDV. Modric again is probably irreplaceable but the likes of Dembele have skill, power and pace to be very capable players in the centre of the park. Walker (if he ever comes back) has the potential and I'm sure we've all been impressed with Dier.
What you need my man is patience. If we ignore City and Chelsea whose squads are insurmountable at this moment, Lloris is better than any other keeper in the league (Courtois and Cech excluded). Vertonghen on his day is right up there, as is Walker. We're going to need an established first choice pairing at the back, Chriches, Kaboul and Fazio will fight for that position but once it is done then chemistry will grow.
Do we need more/better players? Probably a striker but that is it. Once Pochettino has it that the players are playing for each other we'll be well on the way. And while we want top 4 we have no right to be in the top 4. I personally enjoy the Europa league, we are a Europa league level club, we'd get smashed in the CL. If people don't like who we are then they need to think about their affiliation with the club. What we have in MoPo is our swashbuckling style back which we missed so much, come what may I'll enjoy it. Yesterday I enjoyed the match despite the result, we played with flair and vim (I don't believe Kane has that) which I associate with Spurs.
4th might be too much, but I believe we can have a right crack at 5th.
I agree with a lot of what you said. but if just need a striker to finish the puzzle, than surely you go out & get one?