Great to have the blower back!
I sometimes entertain myself watching the Thameslink core on the maps at opentraintimes.com. The diagram appears to show block markers in addition to the lineside signals: (almost) all signals have block markers, but there are some block markers without signals (mainly in station areas). I can see why you would want more precise control of the train within a station, but can a movement authority extend to a block marker without signal, or must it be to a lineside signal? The former case would seem to make the route unusable by trains which are not ETCS fitted. Or have I misunderstood things?