It would be nice if everyone could easily reformat to their liking. If that is not a possibility, maybe start with the ANSI standards or Microsoft's recommendations: Transact-SQL Syntax Conventions (Transact-SQL)

Another suggestion is to lock down your server connnection settings, database settings, ANSI settings, and set coding standards such as no bracketed names allowed, two part object names that are schema scoped, etc. This will allow you to have readable code regardless of formatting. It also gives developers a stable, predictable environment in which to program.