Very interesting article, I hope that my 10 plots will be enough for my collection, lands will open very interesting options for a good ROI imo but what i find very interesting is the need of summoners for those lands. If we need let's say 150000 summoners for all the plots the scarcity of summoners will be huge.
I'm not selling any of them just now, is possible to see skyrocket some of them soon...
That aspect of things is still being figured out, so it's hard for me to comment. However, I think it's safe to say that the land expansion is going to create greater demand for almost everything, including character cards and DEC.