I think while we played Sheff Wed at a great time with their off the field issues, i think you're doing a bit of a diservice to say they weren't tough opposition. While there certainly will be tougher this season; Forrestieri is one of the very best players in the league, 6'5 Nehiu is one of the most physically tough players to play against, Bannan is quality, their wing back Reach cost nearly 6m and they are bringing 30k a week off the bench in Fletcher plus Joao is no slouch either. They looked a threat every time they went forward and they were miles ahead of anything we played last season in terms of quality - but i do think we made them look ordinary with the way we played rather than them not turning up.
Regarding getting punished more at the back, hopefully having some time in training to get to know each other better in the coming weeks will make a big difference and some of the mistakes and gaps left on Saturday will be ironed out.