I think there's a broad range of developments needed if FTTPoD is to become anything other than a niche product for a small number of business users and wealthy residential users.
At the moment, the tiny number of exchange areas in which FTTPoD is available means it is really only in an early deployment type scenario. This may reflect the huge amount of FTTP work still to be done in relation to the commercial roll-out (though much of this was switched to FTTC) and for BDUK - if FTTP deployment resources are needed for this work, they are not necessarily available for FTTPoD roll-out.
As you rightly say, the product itself isn't that enticing - 30 Mbit/s upload is too slow for the costs involved.
The costs of FTTPoD are difficult to justify on a price/performance basis. Those who are the furthest from the cabinet, who have the most to gain from FTTPoD, are likely to be amongst the furthest from the aggregation node who therefore face the highest up-front costs for FTTPoD.
FTTP itself is sufficiently rare that few ISPs have a 330/30 Mbit/s product to offer.
I think the cost-sharing model for deeper fibre roll-out is a good one - Openreach invest knowing there is some sort of return, and the roll-out is targeted directly to those willing to subscribe. Hopefully the cost of FTTP deployment drops over time, allowing the creation of a more attractive FTTPoD offering.
I'd love to be free of DSL over a metallic pair, which I regard as a fundamentally kludgey (but nevertheless brilliant) technology. However, with solid fast path 80/20 Mbit/s service and almost no justification for a faster connection, I'm sticking with what I have at a very attractive price. I'm paying a few pence per month less today for unlimited 80/20 Mbit/s FTTC as I was this time last year for 16/1 Mbit/s ADSL2+ with a 200 GByte/month downstream cap.