Should make these useable as currently they are not, would be a good way for non-dz players to get mahogany planks as there arent really any methods outside of miscellania(which the only tree on that island doesn't have a working bank) and zulrah.
Also, it gives more farming xp, and since contracts give a strong supply of mahogany seeds I think it'd be nice to have a use for them, i'd assume they'd give similar xp to maple.