To be honest I don't think perfect straight brickwork really matters much, it's an obsession that comes out of college courses where it's a bit like london cabbies learning there's only one right way from Piccadilly to Stockwell, when there are about 5 ways that are perfectly good. Also the house-in-a-box style of mass-building where you want to get everything even so the doors and windows just slide straight in without any filling needed. There's loads of totally erratic brick-built structures all over the country, many of them hundreds of years old which have stood up perfectly well. So long as you have a some kind of bond holding things together periodically, a decent mix and a horizontal line, it'll stand up fine. This is partly why inner and outer leaves on walls have such different appearances, brickies mostly know the look of the outer is essentially decorative but it's no stronger than the inner.
The fetish over straight bricks is a bit Victorian really, order and the bureaucratisation of daily life in order to increase speed and productivity.
I'll get off me hobby horse now.