i think paper 2 requires more analysis, i mean the more points u add the better it is.for paper 1 it is said that a BA level answer is fine but since past papers have really heterogeneous question i reallt doubt this presumption..so these days i m also exploring different references for various topics.for instance last year paper had a question about keynesian consumption function..now for 20 marks i think a simple answer isnt enough.u can star with 2 sector model n xplain C func n then in three sector model..i mean adding govt sector. then u can go ahead n compare it with classical C func n may give some example of the function.
as regards the detailed discussions its better to do it on forum as u may get opinion of more than 1 person.
hope that helps..