The intent of the suggestion is to give people incentive to play more games / give a crap about playing after hitting custom belt. Giving them items that they had access to (even if they couldn't afford them before) does nothing to solve that. The items need to be something others cannot get by purchasing No-Qi versions of it, and requiring 30k, 40k, 50k, 60k Qi etc etc.
3D Object seems to be the best outlet because we have an entire volunteer staff group dedicated towards creating them, it gives them a large creative license, and it doesn't ruin the existing economy. Without going into detail I'm aware that many items have remained unreleased that have been talented designed and even textured they just haven't been put into market. Slapping some high QI restrictions to those would be a start. Make them cost a bunch of TC if you want and let us sink more TC out of the economy buying them from Torishop? Win win.