There is so much good stuff in here and I take it that the DfT would have to dig very deep, to say the least of it.
A flyover at Woking was started sometime in the 1930's, and I have been led to believe that some of the initial work still exists. Shame about the houses that are now there. There was also the idea of a high-level at Woking - a flyover for the Bournemouth Main Line with the Pompey service using the 'low-level'. A scheme which, so I was told, the populace of Woking would have been happy with.
I am not good at the suburban area - living near Christchurch all my life means that the delights of Chessington etc. and passenger flows are not a specialist subject. For the 'outer' area many issues could be resolved by longer trains - WoE in particular. For the latter a ramp up of linespeeds west of Basing (juice to Salisbury etc. are covered elsewhere) and new(er) traction more than useful - the 159s, bless them, do not have that many years left - what happens after needs to be sorted, and soon!
My local service is broadly fine and broadly similar in service pattern to 51 years ago - tweaks have happened, such as electrification to Weymouth. The fast services are slower than they were and the semi-fasts faster - due to stopping patterns. All in favour of the latter, as they stop at Christchurch, but I would like the fasts to be what it says on the tin, fast.
Perhaps I need a rootle in the loft to view the old timetables - too late now.