The updates are certainly an improvement, looking at the earlier house, it looks unusually tall now.
Bringing your house graphic in Photoshop, it appears that you using a little over 70 different colors. You might want to consider reducing the number, especially considering many of these colors are very similar and perhaps were produced on accident. However, it may be a moot point since most engines these days can certainly handle many more colors than in the old days... But a limited palette does make overall image changes much easier and gives you somewhat more control over your final output.
To give you an example, I have whipped up a quick edit, just using Photoshop's automated color-reducing options. This is your image using only a 16 color palette. (with one of those colors actually being the transparent background)
I would argue that it looks nearly identical to your earlier post. However, this image is much smaller in file-size, and has the benefit of an easily editable color palette.
I do understand that there is some loss of detail in the image, (the doormat has lost most of its texture) since the color conversion is automated and has to pick and choose without really thinking, but perhaps you can take this as an simple example and do your own color-reduction by hand.
On a further note, it may or may not be helpful to increase the overall contrast of your image. But beware, it can be difficult to find a balance between dullness and overly saturated colors sometimes.
