I think @Richard really nailed it, as did @AlexB in terms of land use currently.
Particularly with Clark Kirby now at the helm, there's a big whiff of the John Menzies era of Village parks again, where long term vision, investment and focus on guest experience, and look, let's be honest here, doing the right thing has trumped maximising shareholder return at the detriment of what the brand stands for.
And that's important, because with the right top level people having enough exerciseable power means money spent on things that may not realise a tangible or direct ROI are upheld. Think steam trains instead of diesel trains and you're in the right headspace. Sure, the diesel might be cheaper overall, but the steam trains create this intangible value to everyday guest experiences. The smell, the movement, the history, the immersion into a different world... these are all things that don't mean anything on a shareholder spreadsheet. However, something so intangible creates such a tremendously powerful impact on guest experience, and hey, let's not forget Dreamworld's brand was built on just this. Barbershop quarter didn't create a tangible ROI, but they were amazing. The horses clip-clopping through Main Street pulling a cart? The IMAX experience? The overload of shows & entertainment? All expensive, and all add up to being greater than the sum of the parts.
To be frank, i'm not about picking Ardent or Ariadne or any other parent company, and for all the junk Ardent has copped, let's not forget that for the period the park was closed they supported the Dreamworld team very, very well, so for me, so long as who-ever it is treats one of the country's most iconic brands with the respect it deserves and ultimately, invest in enriching the brand as much as Village are with their brands, i'm happy.
Buuuuuuuuut mayyyybe selling the land that's a link to the new Westfield shopping centre and the Coomera Train station isn't the wisest move. If I was as lucky as Clark Kirby and inherited a bunch of parks, except instead of Village it was Dreamworld, here's what i'd do:
Get on the phone to Westfield. Start the conversation about a long term vision of developing a Universal city walk of sorts between Coomera Train Station, the new Westfield and the Big Brother house.
Get onto the phone to who-ever has the Big Brother house land. Enroll them in the idea of the city walk.
Get on the phone to Hilton, Sheraton etc. etc. about building a hotel in the citywalk.
Get Dreamworld back to the 1980's vision John Longhurst had.
Update, rennovate & innovate the theming from Mine Ride through to Rocky Hollow and Blue Lagoon. New rides, attractions, bars, food, retail. Develop a new entrance where Blue Lagoon is. Build a new steam train station there too for citywalk guests. Make the space amazing again. Build an RMC. Click "select all" on the Zamperla family rides page and just make it a good space full of kinetic energy.
Quieten Tower of Terror. Make it work better. Remove most of the tunnel.
Move Motocoaster anywhere else. Don't care. Needs to be moved.
Develop ABC Kids World into something world class with the land that Motocoaster sat in. Tone down the fading pastels. Add more trees in, make it intimate. Add more food & bev. Make it a lovely area full of nice surprises.
I'd go on but I think i've droned on about plans elsewhere. Point is, Dreamworld's a global brand, let's treat it as such.