You're referencing the 2007 electoral process in which they brought together the Scottish parliamentary balloting at the same time as local government and they were using two different electoral systems. I was thinking about this earlier, and it's not usual for me to quote pop culture, but I was reminded of Smokey and the Bandit when they said they had a long way to go and a short time to get there. In Scotland, that could pretty much sum it up. There was a lot of change in a very short period of time.
When we went through the process and appeared before a Westminster committee, I think the exact same question was asked of me, which was whether it had to do with the electoral system itself. You could have a look at the report that I wrote it with Ron Gould, who was the lead reviewer. He was the former assistant chief electoral officer of Canada. We identified many changes that had been made, and it was really a matter of lack of focus as to who had the authority to make the changes combined with many changes being made as we went through the process.
To answer your question, I think it's much broader than simply an electoral system change.