While I'm always happy to receive constructive feedback I think I may need to correct some assumptions you've made. Despite me being new to this forum I am not new to 3d printing, painting or selling pieces and have been doing so as a small side business (cottage industry) for some years now. I normally concentrate on the 1/100 and 1/56 market but only started in this 1-30 market a couple of years ago based on people's requests for my pieces in a larger scale for TS. Most of the pieces are originally aimed at the wargaming market where historical accuracy is not the key factor and buyers are happy with a 'representation' of the model that looks good on a gaming table. I simply had multiple requests for pieces to be scaled up to 1-28/ 1-30 scale so started producing larger pieces for people as a result.
Not all of the designs are my own designs as I fund numerous Kickstarters for 3d buildings / terrain and buy the licences to print and sell the models. However, where modifications are needed, especially for the 1-30 market, I do these modifications/adaptations in collaboration with the end buyer and to their specification so they end up with a tailored piece that matches their expectations or requirements. In a number of cases (the Wake island bunker / the Italian cinema) the 3d files don't exist so I design them myself based on images the buyer sends me. Some of your comments regarding impracticality of the pieces may be correct but, if they are designed/modified to the specifications of the end buyer, then who am I to disagree? The one thing I do ensure is that the end buyer gets exactly what they request and that they're fully happy with piece before any money ever exchanges hands.
If I've misworded my original post then I apologise but the only reason for posting these images on this forum was simply to raise awareness of the versatility and flexibility of 3d printing as an alternative way of everyone enhancing the TS hobby, and showing that collectors can access pieces for their displays / collections that may not be available in any other way and also at a cost that would be significantly lower than you normally find from the 'branded' suppliers. The other reason for posting them here was because a fair number of people who I've worked with and sold pieces to in a number of countries, are members of this very forum and some of them have suggested I post on here for the aforementioned reason. Hope that clarifies things a little for you.
Paul