1/ no Landing as well refer to Q4
2/ yes that's why it has a semi levered gear arrangement without Toe down.
3/ yes, the 200 doesn't need the extra tail strike protection so reverts to a typical bogie setup with Toe Down.
4/ on the standard 777-200/200 LR and 300 the Toe Down ensures all 4 wheels will de-rotate and contact the ground quickly after touchdown even with the nose high, for better braking traction etc I guess. This can't happen as quickly on the ER as it has a semi levered ( stiff ) gear bogie with no Toe down.