I don't think the pension thing is fair. Lots of people who are approaching retirement age - Murrell is 61 - have very healthy pension pots. Murrell's salary was over £100k at some points in the past and the way the tax system works it can be a smart move to up your pension contributions to reduce your tax liability. That is not being on the fiddle, it's sensible planning. Also, if the state goes after his pension fund then what happens - they clear it out, and he is supported by the state (i.e. the rest of us) for the next 30 years?
Assets are a different matter, but the issue you have here is that many assets won't exist any more because they have been used or thrown away, or because they have no value. A second-hand fancy coffee machine is worth a fraction of what it cost, especially when sold at auction. Had he been pilfering money and putting it into a separate bank account that'd be so much easier to reclaim. The large shared asset is their house in Uddingston. Not sure how much that'd be worth - £500k maybe? And obviously half is hers, not his. So even if it's sold, it wouldn't cover what he stole.
There is also mention of a share of a property in Portugal owned solely by Murrell, but again the exact set up is unclear and there's no indication of value.
https://www.dailyrecord.co.uk/news/scottish-news/peter-murrells-posh-portuguese-hideaway-29721531