A quick catch-up from me, Chris, as it's been a few weeks.
Smoke - they're both excellent images, and I might go against the grain and say I prefer the second one as I like the brighter light and different colours in that one.
Vivid - nice idea, and I'll echo the comments of others and say it would have been even better with the coloured caps facing towards the camera, but it still gets the theme across very effectively. Shame about the wall as that would indeed have been perfect!
Large - they both work well for me. The ant on the shoe is a good idea and I had to search around to find it, so it really conveyed the theme. But my favourite is the tractor because of the effective low POV and the bold red against that lovely blue sky. It makes a striking image.
Architecture - a really interesting building and good choice to go with monochrome processing. Shame about the very top of the roof but I know how hard it can be at night and it doesn't spoil the image, if anything it does accentuate the height, as you say
Broken - it certainly is! Hope you didn't drop it especially for the shot