Personally I think Eriksen is one of the best players we have and would be the second person on the team sheet if I was the manager.
He has the skills and the brain to be our playmaker, pull the strings and run the game. But he needs to be played in a position where he can influence the game. He has to be central. and that makes it difficult in our current set up.
I don't think he is a natural #10. In this position he either receives the ball too high up the pitch, as a striker rather than a playmaker. So he doesn't get the opportunity to influence the game as much. Or he ends up dropping deeper into midfield to pick the ball up -and then we don't have anyone in the #10 slot ahead of him.
But when we've switched to a 4-4-2 - often when we are up against it, chasing a game - with Eriksen in the middle, he looks quality and the team looks better too. He always wants to get on the ball, and he reminds of Modric (but a Modric who can finish). He have very good vision, and he passes first time when there is pass on, and his instinct is to move the ball forwards rather than sideways. And I think he perfectly capable of putting his foot in tackle as well.
So I'd rather see Eriksen in a 4-4-2 or if Poch insists on playing a 4-2-3-1 then as a more advanced one of the 2 deeper midfielders. That means the other DM has to do a lot of defensive work, and I'm not sure if any of our current DMs are the right kind of player. Sandro was.
What will probably happen though, is that we won't play him centrally, we will continue to sub him off early, and he will leave, and develop and fulfil his potential somewhere else. While more mediocre players like Chadli, Townsend (sorry Andros), Capoue etc. will still be at Spurs.