If one accepts that to get from where we are now to the 'elite' level will take several years and several steps then we have to accept that first we move from average players to good, then to very good and finally to world class. How we currently grade each player will be down to people's judgement on here and, more importantly, to people in the club who will do the business. They also have their 'vision' of what they want short, medium and long term and need to get in players who fit into that jigsaw.
So, perhaps the question to be asked is 'is Shaquiri (or any other name that comes up) better than we have now, will they fit into the jigsaw and improve us and move us to a place where we then look at a higher level'.
That's the gamble of football and look at how Stoke got it wrong (hence talk of Shaquiri's transfer) and how Leicester got it right. We tend to believe that we shouldn't make mistakes but that's not how gambling works and that is exactly what it is, a gamble. A good manager/coach/DoF or whatever tips the odds more in our favour but it doesn't guarantee success.