My concerns about that are:
1. What if BTC skyrockets and steem value stays the same?
2. What if Steem gets hacked again within that time?
3. Time value of money... having 3.6 BTC now is much better than getting it over the course of 2 years
4. Am I really trusting that the Devs have thought this through.... that they not only understand crypto but also ECONOMICS enough to know that this ecosystem is sustainable?
1. there's always this risk.. you can make this same question for any investment in bitcoin.
2. same answer ^
3. yeah sure. but dont forget about the reason why you powered up. to have profit with this you will need to "work" in steemit. With more power you will earn more from PoS, curation and other things.