RAIL has a sizeable article about TfL's aspirations. Most of it is
fairly predictable, but a few items stuck out.

*Improvements on the Greenford to West Ruislip corridor

Huh? If they are talking about Chiltern's aspirations to run to Old Oak
Common, wouldn't they say "South Ruislip to Acton Wells" or something
similar? Aren't the existing Central Line trains underused? Is TfL
planning to take over the West Ealing Greenford shuttle and extend it to
West Ruisip? Wouldn't it make more sense to extend it to Uxbridge
(although it would probably have to cross the Central Line a second time)?

*24tph on the East London Line

Where would they go? Would 12tph turn at New Cross? Are there paths
available on the other branches? Will they add Wimbledon and Sutton
branches via Streatham? Actually, transferring the entire Wimbledon Loop
service to the ELL might give a better match between train length and
demand, compared to the 8 carriage Thameslink service: so long as
Streatham kept a frequent Thameslink service for passengers from the
loop to Farringdon to interchange there.

* Crossrail 3

No details given. Maybe everyone is so familiar with this that it can be
just mentioned with no further explanation, but I'm not.