Fair comments, but Kane Ade Soldado can all at a push play the 'non-CF' role. Quite often Ade or Soldado will go wide, whether that's a good thing is another matter and Kane sometimes plays 'second striker/No. 10, whatever.
I always think in terms of a front six, rather than worry too much about 4-2-3-1 or whatever. IF Jonas is good enough, then probably we could fit two 'strikers' in at times. The key thing for me is depth. For example, I think Ade should be rest for the Sunderland game, then we have other games coming up very quickly.
IF we want to win a trophy our experience over the past 5 years points undeniably to the fact that we keep going into key quarter/semi final games with substandard teams because of a lack of squad depth. West Ham killed our defence last season in the lge by the simple tactic of lobbing high balls at us because Allardyce guessed correctly our makeshift defence wouldn't cope, and as for the Benfica games, .......
This problem has been repeated at other times, we lacked key players v Portsmouth for example, IIRC.
That's why I'm disappointed we didn't fill our squad up to the 25 max. A Welbeck and a Shawcross type taking our HG quota to 8 would have made me a lot happier.