Seems like a good idea to me. But if we're going to stack Splinterlands assets, why not start with getting a PLOT? If we're going, we might as well go BIG, right? :-)
The other thought that jumped out at me when I read this post was...if you're thinking of renting out GF cards for income, why not offer them to INDEX holders first? Determine a starting price and do a quick daily auction (or some facsimile thereof) to see if anyone wants it. INDEX holders could maybe get a discount to the market by having it delegated from the INDEX account rather than having to rent it and they just transfer DEC to INDEX. Maybe require 100 INDEX? (less? more?) or something to qualify. That said, it would probably require a little more work for you guys on the back-end, especially if you get a dozen of these things. But, you'll have to put in some time getting them rented too so....just a thought.
This is a really good idea! Like, really good lol