Totally agree, problem is though mate, as it currently stands anyway, players good enough to take us to that next level will fall into two categories, ones like Lukaku who see us as part of a stepping stone process to get to that constant CL and title challenging/winning team, or ones have already been through that period and the move didn't work out for whatever reason - like Scheiderlin.
The key is to get enough of both atvtge club at the same point in time to turn the club into what the first group aspire too, spurs probably a good example of that as have been Athletico recently.