Just done 2F -> 2E (L), and also done a couple of 2F -> 2Fs recently.

A few comments, in case this thread is still relevant:

1) 2F -> 2F is a big improvement
Connecting within 2F is now quite convenient, and a big improvement over the hike to/from 2D, plus security check, that I used to have to do in the past...

2) Flight information upon arrival in 2F:
Although the 'short connection screens' at the end of the jetways in 2F are a nice touch (although also easily missed), there don't appear to be any other flight information screens until after the doorway that separates access to the 2F gates from everything else (the flight information screens, and boarding card machines, are after the one-way doors). So, if you arrive in 2F, and for some reason aren't sure of which gate your next flight is departing on, then you have no way of checking this, and have to guess which door to go through... (I realise that most posters on this Forum would know, without being told, which gate they need and where it is - but less frequent travellers may not - especially if they received their onward boarding card before a gate had been assigned for that flight...)

Flight information screens before the doorway would be an easy way to help people know which way to go...

3) Queuing Time At 2E Immigration
Various previous posters have mentioned this. There was a huge queue at the Immigration control for 2E (having walked from 2F), filling the entire hall. On the positive side, there was a SkyPriority / Access No 1 queue (which had an agent at the entrance, checking eligibility ^), but even in this queue, it took me ~15 minutes to get through...

4) General Impressions
Personally, I don't like the lower level walkways in 2F - they feel crowded, especially as they have concrete pillars in the middle every few metres. I realise this is an issue with the construction of the terminal, which can't be changed - but it is still unfortunate.