Slaven Bilic’s side have struggled in their new home and only visible progress on the pitch will compensate fans who have swapped 112 years of history for a running track and a poor atmosphere From a business perspective, it was not hard to understand why West Ham United found it impossible to resist the allure of the London Stadium, with its agreeably large capacity, vast corporate facilities, proximity to the capital’s centre and Olympic legacy. It seemed to tick all the…