Challenges are frowned upon in here for a couple of reasons, degas.
By its very nature LLM's not about beating someone else or proving how good you are, so challenges serve no purpose, and, probably most important, they lend hand to a Liverpool (

) situation developing.
That said, one of the best times in LLM was when we had the very first Leigh RMI challenge, but it was played under strictly controlled conditions.
In order for the playing field to be flat at the start it was necessary for everyone to use an English Quickstart (because of the random nature of the game when setting up a new game) and to agree specific conditions, that being the challenge would last for five seasons, it would be updated every season, and that it was played to defined LLM rules.
All a bit anal, you may say, but it worked and worked well. No-one involved said they didn't enjoy it...apart from me ( Liverpool (

) )
I'll leave this open for a bit to guage response (I'm not confident it'll be good), and if there's enough interest in a similar challenge then I'd personally be quite happy to let it ride here, though I'll obviously contact the other LLaMa Mods.