If you have to bring on Lamela and Llorente I’ll stick to threadbare.
We need a Dembele replacement and desperately, did you see the Chelsea game, it was a great example.
Dreadful performance from some.
Strange definition of threadbare in that case.
We need upgrading in several positions but that's a different thing entirely to what you have described (and what i picked up on) which is essentially a squad short in numbers - everyone asides from City have multiple positions they need to upgrade,we're not unique in that.
Lamela along with Moura helped us early in the season (to our best PL start to a campaign?) when our big guns were out, that's what you want from your back ups, Llorente done the same recently when Kane was injured. We're 3rd in the league, having a good campaign despite suffering plenty of injuries to our first choice players and have had to dig deep in to the squad many times to get by - id suggest we wouldnt be close to where we are currently were our options as weak as you seem to think they are.