I've uploaded a new version of the list in the first post.
Changes for version 4.1:
Assault Terminators replace Terminators to focus the list more on assault.
Thunderhawks are moved to being a support detachment rather than being in the air 1/3 - I tried to write an all airbourne list and quickly found it too limiting currently andmyself spending more than 1/3 on aircraft (TH, 2 THT, LC and ST fighters = 1025). I am fine with there being a 1/3 to limit the fighters, bombers, ect in the list but all airbourne lists should be allowed.
Neophytes are corrected to have 'plus transport' and count as Tactical Marines for transport purposes. Neophyte Bikers count as Bikers for transport purposes.
MW removed from the Emperor's Champion's CC sniper attack (shouldn't have had it)
Land Speeder Typhoon upgrade cost reduced to 15 points after the discussion
here but also limited it to 0-1 per formation, to further limit shooting in the list.
The list should be pretty stable from here, I don't have any other changes planned and hopefully we can test it and just adjust points slightly if needed anywhere.