Rizzla, I think in your understandable enthusiasm for FTTP you are being a little harsh in calling it a bodge. In an ideal world, of course we would all have FTTP. Sadly the world is not at all perfect. Not every house was built in the 1990s, or in some quiet village. VDSL2 is IMHO a very good solution for urban areas, particularly large towns or cities. It would be harder to achieve the successes seen elsewhere, when there is restricted land access, properties with flatted dwellings, conservation and planning restictions etc.
I do think that since you are fortunate to have a 20Mb/s ADSL2+ connection, then as long as you are happy with your provider and the cost, then, for you, it probably doesn't make sense to move to Fibre at this point.
I have myself moved to FTTC recently. I had been thinking about it for quite a long time before, but was in no rush either as I had a reasonably respectible 14.5Mb/s on ADSL2+. In the end it was the SKY takeover of BE that gave me the final push, but moving from a 16-24Mb/s ADSL2+ BB+landline with BE to a 80Mb FTTC BB+landline with Plusnet has actually saved me money too!
IMHO, there was a significant advantage to me (and probably to most people except those on EO lines) in eliminating the effects of the E-side copper, which in my case was ~2.35Km. My PCP is only 150m away, on probably the 2nd if not the first DP, and via 5 UG joint boxes. As a consequence, my VDSL2 attainable at 91-94Mb/s DS exceeds the current product caps for profile 17b, but is probably capable of more than that with profile 30, and even more so with vectoring, which only requires firmware upgrades at both ends of the copper. All of this achieved with no changes to the internal wiring. It would be a significant hassle to me to accomodate an OTU, as the current entry point is in the bathroom at the rear of the building 2 floors up.
So, in the end, I think it's a case of horses for courses. Clearly FTTC doesn't appeal to you, but your circumstances are entirely different. But frankly, the state of the Virgin Coax pillars and distribution 'conduits' around here are horrific - a rats' nest open to the elements, corroding, shorting, rubbing through on the sharp edges of the cheap 'tin' casings. How anyone gets a good service out of that mess is beyond me. No thanks Virgin.
Just putting an alternative point of view for the sake of balance. There is no 'one size fits all' solution, just a number of different solutions which may be more or less appropriate in a given set of circumstances.