Hello CCF and welcome to the forum.
I value, respect and welcome any help, advice and added information anyone including yourself brings to this discussion.
Your advice on the outer doors are interesting and certainly something which maybe could be looked at.
During our visit last Friday I had to help an elderly lady get back out of the outer toilet door near the cafe.
She had managed to pull the door open but couldn't then hold it open to exit. I held it for her so she coud leave, as she went she said 'it's a bit heavy' - which it is.
The other problem of course is the height of the handle.
Anyone in a sitting position would possibly struggle getting out - to actually reach the handle, pull the door open and hold it there whilst in a wheelchair - it's not easy and as I have said my daughter has no chance of getting out of the lobby.
To enter she woud have to push it with her feet whilst moving forward, some wheelchair users as you will be aware will not have this strength in their feet/legs.
I am heartened that you consider that it may be possible to improve upon what has already been done.
I am sure you have ideas of your own as to what these could be.
Thanks for your input