Truth is, most of the things people have said they dislike about the system are what make the system different to others.
The "caster-kill" issue is one of the best examples. The infantry that you prize can be smashed apart and you could even lose your favourite jack in a failed assassination run, but so long as you have your caster, you're in with a chance of winning. Other games I could mention are often decided by a single combat/magic phase/unit choice anyway after which the game becomes increasingly one-sided so where's the difference?
Page 5 is essentially a matter of perception. Someone could have read it as an excuse to be a douche and used it as such. Others use it the 5 rules to inform their gaming equitette. Can be annoying but when done right, it leads to some really good games.
The model quality is one of my gripes. PP range from incredibly awesome (most casters, jacks, and units like Knights Exemplar) to incredibly naff (Fiona the Black springs to mind). GW has better quality moulds, but the wow factor seems to lack in recent times. As for metals vs finecast, I've heard no end of people complain about the quality of finecast and a wish for a return to metals.