Some fair comments fronm all sides i say.
I have walked the ODP twice in the last few years and granted it can be a bit dreary in places just as most other LDPs have their "bad bits".
Weather can make a tremendous difference in Wales and if its bad then the trip can become very hard and persons perception of the walk can often be judged on that and not the quality of what it contains.
The beginning and end of the ODP is a dissapointment but the many excellent section make up for any shortcomings.
I shall be revisisting the ODP in late September to do a stretch from Kington Top Montgomery,arguably the most difficult section.