I can recall an interview with Philip Carter, around the time of Kendall getting the managers job, 80/81 ish.

He spoke of the main stand being the new Gwladys Street, and the desire to turn the whole stadium around to suit., bringing the Stadium capacity up to 60,000. In effect, knocking Gwladys Street school down, and several houses in Muriel and Diana Street, and commandeering that minty car park on Walton Lane.

He spoke of how we had people doing costing's to
see if this was feasable. If it was to prove too expensive, then the club would look at nearby available land, to begin a whole new stadium.

He spoke of Goodison being "tired", and Everton never being a club to stand still.

I remember chatting with my Dad about the interview back then