I've seen some discussion of whether the aircraft leasing companies will be able to take a lien on the assets frozen by the West in the event of Russia seizing or nationalising aircraft without lease payments.
This of course raises the wider issue of who is going to pay to put Ukraine back together as Putin continues the current indiscriminate demolition of the country. If the West does indeed have those Russian billions, would it not be helpful to make clear that re-building every bit of infrastructure and equipment being destroyed and the care and compensation for every killed or injured civilian will be paid from those funds before they are ever returned? Seems only fair that it will be a cost to the Russian taxpayer and not those in the EU et al. I believe the U.S. has made a similar claim against the Afghan reserves on behalf of 9/11 victims, which of course is a far less black and white case.