This ran at the Soho Theatre Sandpit last night - to reflect the storytelling theme of the evening, the bland list of required categories was turned into a story with boxes for missing words.
Some impressive scores; despite only having fifteen minutes to grab words from the streets of Soho, three teams got the full complement of 11 required from the handout. There was some ambiguity over what alterations did and didn't count (the rules weren't clear on whether you could add letters to existing words, and about half the players overlooked the "only change one letter" limit) - the ruleset has now been cleaned up.
In honour of the team who came up with "Sardinia" - presumably from "sardines" - a two-letter maximum seemed about right. (More than two, and if you've got a good hand of tiles, it's too easy to make too many words.)
Based on further play iteration, I've bumped the letter limit back down to one, and given an ideal playing time of two minutes per category - we played it for half an hour with 11 categories, which felt a little on the long side (the last five minutes or so my team was just idly checking for better alternatives to our existing words).
Any feedback on how other players have found the game would be appreciated, though.