It's most disappointing. I've seen the new platform used from time to
time when it's busy and there are delays. Quite often though these
trains sit there for ages and then depart with no advertised
destination or an incorrect one.

Before the three car trains arrived it wasn't unusual in the morning
peak to have to wait for 2 or 3 trains to go before being able to
squeeze on so it may have been the plan to send occasional 'rescue'
trains but now we've got three car trains there's no real need. I do
wish they'd try turning round the Stratford-Crossharbour trains there
though. The original planning application for the third platform
certainly implied that sort of frequency.