Okay, I've been fiddling with the Javascript and I can now get bedrooms (unreliably), I just wasn't getting them and then I changed the counter that was adding them (_g) from 1 to 0 so there was an extra one added and now I regularly get one... but only one!

I also tried to add tiny and huge buildings by adding them (almost) everywhere a search found the word "large" (it found a function "*enlarge" which was clearly not relevant) but it hangs for some reason, I can't find anywhere where the number of possibilities is only allowed to be three and I made sure to fix the bits in the grammar.json so the naming was not messed up but no joy... other minor tweeks seem to have worked in the naming and it seems like that would get entirely run through every time the program runs so it seems sound, it is just the runs that include a "tiny" or "huge" tag or randomly include one (one in nine times for each - I changed the frequency to 1,2,3,2,1 to reduce the number of extreme buildings).

Any thoughts?