Nice, I didn't notice the cabinet was a Pi style, looks like a cabinet. Good middle ground. The mechanism one looks great too I saw it as a mechanism on the first glance. One minor point is that I find it looks a bit too busy as an image compared to some of the other more minimalist tiles.
I might have the hatch cover wrong, is it on the second row on the far right? I thought it might be two left of that, which looks a bit like a backpack to me. I like that it's all quite abstract so careful not to get too worried if people like me see backpacks instead of hatch covers
. I am now wondering what the two tiles on the second row far right are and also the U's (first row fourth from the left).
The font style you are going with looks really good, even things like the % and £ signs fit in nicely. Combined with the collage effect of the stained glass style means most of the tiles naturally "fit" together stylistically.
On the third screenshot, around the 5th line down is a good example of this. The purple and blue dwarves amongst the more ascii style tiles really work well together. The dwarves and the stairs there are great middle gound between having high fidelity images of furniture and totally abstract alphabetic characters. I prefer the sharper lines of those to the softer edges and geometry of the tables and chairs right now.
In fact, looking back I kind of prefer the approach from the OP screenshots. It's the sharper lines that appeal more to me given the theme. Sweeping angles and bolder edges really sell the 'Stained Glass' ambience of this tile set so far. The more pictographic grass and gem tiles along with dwarves go great with the theme as well as the more character based ascii-like ones.
This has just made me think about your new floor tile. The design looks good and the alpha wizardry is great. The transition from rough to smooth to engraved goes really well. I like how you have subtly kept the same lines from the rough texture behind the smoothed and engraved ones, it brings the tile theme together well.
I look forward to seeing more.
Edit: I just realised what a great balance between ascii and not it is. I'd usually find this a little bit abstract for my tastes but not at all. I think the dwarves are great for this, they conjure up images of the unmodded DF dwarves and get you in the mood for a more minimalist tileset.