Greetings one and all,
I want to start this off by talking about the dominant player in RPG modular terrain.
Dwarven Forge produce a pre-painted modular terrain system for producing building/dungeon interiors. DF product is easy to use and the individual pieces are well made and painted. It has three key issues though...
Firstly, it is extraordinarily expensive. While the individual pieces and the individual sets are exorbitantly priced, what really needs to be considered is the cost involved in acquiring sufficient pieces as to be able to run all of your gaming sessions' combat scenes within a tactical combat environment built around Dwarven Forge product. It's great if someone buys you a DF Catacombs Set set for Christmas -- it's heartbreaking when you realise you'll need a dozen more such sets before you have a practical tactical combat environment for your combat scenes.
Secondly, DF product is uniform to the point of being bland. There is no choice in paint schemes. So everyone who has a Catacombs Set has the same colour scheme, the same look. When you look at a tabletop of DF product the uniformity of height, of colour, of angle is reinforced over and over again.
Thirdly, DF product is designed around a grid. The walls don't interconnect, they abut. The floors are usually 2" x 2" or sometimes 6" x 6". The eye is drawn to vertical lines and so with DF product you see these vertical lines between wall sections wherever you look. The floor is gridded to the point where the player can easily calculate range to target accurately before deciding what their character will do -- something their character could not do were the situation to be played out in reality.
To me there's little point developing a new product if all you are going to do is repeat the issues of existing products. I would also suggest that there's little point developing product designed to integrate with an existing product if your "new" product adds no value to the existing product. In the case of DF product this would include product that looks like DF product but is sufficiently different as to avoid design-rights infringement.
Having talked about DF it is time to move on to our product...
Regards,