After John sold Dreamworld, he went back less than a few times - a few weeks after the sale and a few years ago. On his last visit, he remarked to me personally that he hadn't slept for days after witnessing the state of the park, noting that while Main Street (pre Sky Voyager) looked nice enough, everything beyond there was largely unkempt and not to the calibre or standard he would wish for.
That's not to say John was always right about Dreamworld's future or how parks as a whole had evolved in the decades since the sale of Dreamworld - his hatred for any large "un-Disney-like" thrill ride was, at times, almost amusing - he was well known to hold his hand up to cover his face and the view of Dreamworld as he drove past, and we debated on more then one occasion about the merits of Rivals, large rides as a whole and how the industry in Australia had evolved and changed over the years.
Having said all that, my point is this - despite some of his industry perspectives not evolving with the times, I can guarantee you John would hate having his face forever plastered out the front of that park that doesn't understand his fundamental legacy in the same way he would hate having a roped-off, un-operational steam train engine plonked out the front of a closed train line, seemingly taunting guests about a memory that once was and is no longer.