If you want to keep EOS tokens like office space for rent by awesome EOS dApp developers, you should hold onto 100% of your EOS tokens, and register them on https://eos.io/distribution (make sure you have the MetaMask Chrome plug-in installed to access your Ethereum wallet).
Sell your stake now for short-term gains or rent it out in a booming digital real estate market?
I think EOS will bring in a lot more rewards over time as a leasing mechanism than it would as a one-off sale.
I completely agree, EOS when is launched could really bring a new game to the blockchain technology and the leasing mechanism could really make you lot of money.