I came up with this (seemed obvious, as the insulation option is costly).
The real lesson of that game, anyway, is that electricity isn't going to be cheap. When locusts move on, they leave nothing behind
Nuclear has significant carbon costs during construction, fuelling and clean-up - unless uranium fuel is mined on-site. So pretending that nuclear is carbon-free is just plain wrong.
Renewables also have a carbon cost, for similar reasons, but obviously it's a very much smaller one.
It also would have been interesting to see what X thousand windmills or Y nuclear power stations would have meant for the UK's available development space.
And microgeneration could have had a mention too.
(And so on.)
