I agree with most of that. I think Paton is underrated. He's no worldbeater but he brings an energy and mobility to the midfield no-one else does. I'm not convinced at all about Davor. Yes, he is the type of player we need, but he's just too lightweight.
Despite his pugnacious language, Steelboy has a point about our midfield. All season it has failed to protect our central defence. Now thats a down to a combination of factors: players being played out of position (some moreso than others), the wrong combination being fielded and just not having a solid out and out defensive midfielder. I've been really impressed with Lennon Miller, but feel that his best position is slightly further forward than where he's been deployed. I take your point about Halliday's fitness, but am wary about us placing too much reliance on him next season.
In short, our defensive frailties this term have not all been down to a shaky goalie and erratic central defence. That midfield weakness needs rectified. As we seem to be in a "Raith Rovers" mode right now, the kind of player we need is Scott Brown. However, I believe he's under contract form another year. A tenacious, hard tackling leader; thats what we need..