First up, nobody is spending money on a ride for the markets. This is a new ride for Dreamworld that will return a lot of kinetics to main street - something it has needed for a long time - and because of it's convenient placement, and family friendly appeal, it makes sense to offer it (as a first step) as part of the market offering at an additional charge.
When moonlight first started up, I thought the lack of rides offered was a missed opportunity, but i've heard Greg speak about some of the ideas, and it makes sense to me:
The markets were an idea to get people simply coming back to Dreamworld.
They intially didn't offer any rides because they didn't want to 'give away the gate' so to speak and cheapen these multi-million dollar rides by offering them for $2 entry, or pay-to-play
Now, all things considered, Taipan is offlimits. At least for now. The only other rides within reach of the Market area would be The Claw (which is both high thrill, and restricted seat sizing), or Sky Voyager.
Now - I can see a world where Sky Voyager runs during the markets. Perhaps, if they can changeover the programming easily enough, they could run a sponsored program #advertising space that is only available during the market so you don't get what day-guests paying a higher price get, but I don't think Claw is the right sort of attraction offering for the demographic of the Markets.
No, a Wave Swinger, right in the middle of the action, with an impressive light package for night ops and designed with night operation in mind - that is perfect. It caters to a broad range of guests, and is a simple fun family ride for all. It's a one-two punch, giving the park a good quality flat ride, great main street kinetics and an impressive weenie as you enter the park, as well as adding to the night market offering as Dreamworld slowly builds it into something bigger than they started with. I look forward to markets progressing to a point where the park legitimately operates at night - something we've all called for on the GC for ages, and this is just another step towards realising that.