Except by keeping the ships, and telling everyone 8 days in advance to use their permits they've basically unhinged the entire economy. Who wouldn't make as many crappy oak/oak first rates as possible, sell them immediately post wipe and buy up all the crafting ressources/Trading goods?
IF they want to do an econ wipe - then make it a total wipe so we actually get to test the new system without the current docks Spaces, ships, outposts, Clans, clanwarehouses etc that ppl have invested in to max out their Clan/personal potential.