I agreep. Players such as Wanyama and Capoue (who I rate as a much better player than Sissoko or M'Vila) are just what Liverpool need (and both of them can play in defence as well), alongside at quality defender.
There's been talk of signing 2-3 defenders (and 3-4 in total), but I'd prefer something like Wanyama, Capoue and Dede/Douglas/other (I admit I haven't seen too much of Dede or Douglas, so they are more an indication of the type of player (big, strong, athletic) I'd like than actual suggestions)...
Add a quality winger, and the side would look very strong again.