cwllpl,
Ray Webster was in charge of easyJet before and during the take over of Go, and he is stil the Chief Executive. Some Go Directors such as David Magliano and Ed Winter moved over to easyJet, but Barbara Cassani refused a 'second in command' position at easyJet and left the airline business (with a hefty addition to her bank balance).
Rather than Go procedures taking the place of easyJet ones, an evaluation was made to try and deduce which airlines procedures worked best. Although some Go procedures were taken on board, some easyJet ones were extended to cover the whole operation as well, such as free seating replacing the Go system of assigned seats.
Generally speaking, Go was considered a high quality operation, 'cheaper is better' doesn't neccessarily describe them or their activities, the passengers interests were always put first. (although they were obviously focused on keeping costs down)
Cheers
Landing_24R