This is 1/56 but being printed it's flexible.
I think typically this was a dead end, the heavy infantry support tank was being left behind. The 17pdr is a tank hunter but on a slow chassis. Same engine as the Churchill and ten tons heavier.
It feels like the rest of the british 17pdr platforms - jam it onto any chassis and see what happens.
Contemporary to this was the Centurion... This is the end of a design's life, a Churchill stretched to the max.
The centurion was at the very start of its design life.
This isn't unusual, the Churchill design team was dealing with existing tooling, expertise and experience which lowered the project risks but this also constrained their thinking.