I'd say yes to this. Seeing as how lots of stuff actually costs vis to do (like upgrading, enhancing, roulettes, getting your consumables), it would be nice to see the return of a source for a steady income. Vesping is a great way to level, and getting loot from it would make it a nice way to gain money too.
Alternatively, if the idea of getting sellable loot from vesping seems like to easy a way to gain money, you could take one of the redundant higher level maps, and have these drop an increased amount of loot instead. This way you could split the leveling and the money making.