It's certainly changed a lot over the years and your photos are a splendid record.
When the line at Eastbourne closed I, together with a few friends, went down to Eastbourne to help Claud Lane lift the track and load it onto his lorry. Later, some of my friends went down to Seaton to help relay the track down there; I couldn't get the time off work, so was unable to join them. One of my friends liked it so much that he gave up his job in Middlesex and went down to Seaton and became one of the first full time employees.
On my visit this year, the first for some time, I was disappointed that the tram terminus had been replaced. But talking to one of the staff there he said that the old terminus had suffered badly in the salty sea air and had to be replaced on safety grounds. However, the new terminus building is also a tram depot in which trams can be stabled overnight, so having a tram depot with public access does compensate for the loss of the old terminus.
The new terminus / depot will feature in a future video which I hope I shall time to edit shortly, so watch this space...