I honestly think 2 world class players would make a huge difference to this team
GK and striker
Whilst I think our squad needs improvements in every area, I would agree that this is where we should focus. But how do we define "world class", and what would signing "world class" actually guarantee?
There are no guarantees in football, Liverpool could go out and buy a "world class" striker in the summer, but for whatever reason, he might not score many goals. We've seen it before - Shevchenko, Crespo, Robinho, Di Maria etc...
Meanwhile, Harry Kane and Jamie Vardy are banging in the goals on a regular basis. When fit, Daniel Sturridge scores goals on a regular basis, so a "world class" striker is not a guarantee of 20+ goals per season.
Many people (pundits, media etc...) would have said Balotelli was a world class striker when we signed him. He didn't score many though did he?
Meanwhile, Harry Kane, Charlie Austin and Saido Berahino all finished in the top 6 Premier League top scorers last season!
The key for me is the goalkeeper. This is not to dig out Mignolet at all, he is simply not a world class goalkeeper, or top class goalkeeper at that!
Whereas a world class striker might not score many goals in the Premier League, a world class goalkeeper, even a "top class" keeper is worth his weight in gold.
How many "world class" goalkeepers have been signed by Premiership clubs and have flopped? van der Saar, was a success, Courtois has been a success, Lloris has been a success...
A world class goalkeeper can be worth anything between 10-12 points a season for a club - possibly more. Whereas a goalkeeper who is prone to errors can cost a club 4-6 points a season. That's potentially an 18 point swing!
If you are struggling to score goals, than you at least need a goalkeeper that doesn't make big mistakes on a regular basis, and for me this is an area that needs addressing first. Liverpool have to bring in an experienced, "top class" (not necessarily a "world class") goal keeper and then look at our striker options. As I say, we could spend £40m on a well-known striker from La Liga, and he could flop, whist someone like Danny Ings could (potentially) score 15-20 league goals in a season.