So, as I've mentioned on Discord, the terrible, terrible idea that I can and should run an Arms Race refuses to leave my head.
It would be soft-ish sci-fi, an intra-system conflict between two human colonies, fought in space and on a number of other planets. Basically the same as Chiefwaffle's Planetary Arms Race.
I'd be using a 2d4 instead of a d6, which would work like this:
For a design of Normal difficulty, the results are thus:
Roll (probability): Result
2 (1/16): Utter failure. You get nothing except the knowledge of what not to do.
3 (1/8): Buggy mess. Whilst you managed to make something, it isn't really usable.
4 (3/16): Below average. It works. Not especially well, but it works.
5 (1/4): Average. You get what you asked for, more or less.
6 (3/16): Above average. It works, and somewhat better than might be expected. Not a lot better, mind.
7 (1/8): Superior craftsmanship. It does its job and it does it perfectly. Its performance is exceptional and it is as reliable as clockwork.
8 (1/16): Unexpected boon. Not only does it work, but it does things you never even expected it to. If no 'bonus features' make sense, then you just get experience with some related field.
Designs of other difficulties modify the roll value like so: Trivial (+2), Easy (+1), Normal (+0), Hard (-1), Very Hard (-2), Ludicrous (-3). Designs harder than Ludicrous are Impossible, and will never yield a successful product, and will only grant experience on a 6 or higher. Similarly, if the result of your roll would be less than 2 after modifiers, you get no experience.
There would be a degree of tactical control- the equipping and deployment of units and ships, though made relatively simple, since not everyone enjoys complex logistics.
E: Combat reports would be asymmetrical.
I am open to suggestions for features to add/change/remove, though I should mention that whilst all suggestions will be take aboard, some may be thrown over once we leave the harbour.