NonprayingMantis:[snip]
Personally, I think making master filters mandatory on every VDSL connection is a terrible idea - it would just be a sweet money spinner for Chorus as they charge $300+GST to your ISP to get one installed (and then they pass this onto you through higher monthly charges of course), even though a much more reasonable cost would be in the region of $150 (as charged by coffee baron).
Not to mention that there are tens of thousands of households who already have one installed, and many more who will get only a very marginal benefit as they already have decent wiring, so forcing ISPs to re-installing it again for 100% of VDSL orders is just a huge waste of time and money.
Some of your points are accurate in isolation, but you neglect to mention the downstream support costs of customers that don't get a full install ("Master filter"). Now as an individual user you are often almost 100% insulated from ever seeing (or having to pay for) this cost - but as an ISP, it's a major factor.
Cheers - N