In all seriousness, I did look for a small crawler tractor before I bought the TC and there really was not any available. There are small crawlers, but they are dozer types, not agricultural type tractors. New Holland had a crawler series (they still do) but it was much larger than I was looking for.
I saw a pre-notice that Yanmar was planning on importing small crawler-tractors to the US and really that does sound interesting. I suspect the Yanmar will be sized more in line with what I would be interested in.