Whilst I'm generally in favour of reopening schemes, what seems to be on offer here doesn't really seem worth the costs which are being quoted. The report has essentially come up with two options for the eastern section of the line, neither of which is up to much. Either track is relaid as far as Sandy to join with the ECML as far as Hitchin then using the existing line from there to Cambridge, or a chord from Stewartby to the MML to reach Luton from where a new line is laid to Stevenage where the ECML takes us back to Hitchin and then onto Cambridge. Neither of the options offers the direct route between Oxford and Cambridge which made the route worthwhile in the first place, and both will create even more pathing problems on already busy main lines. Imho, it's better just to get to Sandy and at some point in the future, rebuild the remainder of the line along the original alignment.