I've just about finished the spaceship design rules for the Weinbaum game, and it would be REALLY useful to have a spreadsheet to churn out a few designs quickly (and to include with the game), but my Excel is VERY rusty and I really don't want to waste a lot of time getting up to speed again. Most of it is just simple addition, multiplication etc., choice of options, etc. There are a few extra complications, e.g. the cost and weight of the engines and anything involving plumbing rises if you design the ship to land horizontally
I've kept it very simple, and the actual rules are maybe three pages total, but it's longer because I've included lots of examples.
Would anyone be interested in having a go?
later Never mind - as soon as I'd posted that I remembered that there's something similar in Forgotten Futures II; it's actually a lot more complicated, but I can easily adapt the bits I need.