No point in having a bigger team if you can't get shit from the doorway. Dude RuneScape gold is such fun content also, I have done like 50 in my ironman and actually enjoyed it. Im half certain they had a bunch of it devved before survey. Which honestly is rather problematic. I wish they'd do the majority of the work following the survey so they do not waste any job. Warding vietnam flashbacks kicking in.
Mahogany Homes was made in a closed environment with one Jmod, once it passed on the polls a group went to really work on implementing it. When you look in Mahogany Homes it is not a hell of a good deal of work behind it, only requiring a couple of new models, other than that it has reusing assets they've needed for awhile. Oh it was among the ones made on one of the free time idea days.
I believe they tend to work on things first if it's very likely to pass a poll or whenever they can use the resources elsewhere. In this case it was directly according to a popular suggestion from 6 weeks ago so they could suppose it would be well received. But people complain that they don't have enough details and vote it down. So they need to perform a substantial quantity of the work before bringing it into the survey.
I can not confirm whether or not it's accurate, but Jagex continues to be on record dozens of times stating they do not put substantial dev time to pre-poll content. They mostly follow the suggestions and roadmap and receive community input pre-poll. I am pretty sure group ironman was announced at runefest 2017 and has been supposed to be released 6 months down the street at the most recent. Idk why Jagex makes many empty promises every Runefest; it is like they make all these programs and if they get into the dev function they realize it is actually going to become a whole lot more work than they expected but they are fearful of being transparent with the community about it.
The over-promise and under-deliver because it gets people to buy the premier club each year, and as soon as they have their money out of that it's like they no longer give a fuck about the actual updates. Jagex already has the skilling contract frame laid out a long while ago. For example, PoF contracts have been inserted on the fly. It was just a ninja update that required a couple of days. In case Jagex needs, they can add contracts to buy osrs gold safe all the other skills on the fly in both RS3 and OSRS too. The question is do they have better implementations than skilling contracts.