I would say simplicity - but I would lie:)
So:

Obviously, the free start. 50 satoshi (2 cents... now) may not look tremendous to start building up bankroll. But - for a pokerplayer it's more than enough, at the least it should be. Thanks to the nature of the game and the newbies on 1/2 satoshi table lets you to build it into the dollar range and so forth quickly. From that point the only question is: what stake can you beat and how good you are in bankroll management. 

Opening tables, sit and goes, tournaments: some of these options needs some level-ups first, but the opportunity to play with your friend(s) in this home office age is nice in itself. Im only worried about the risk of colluding, to be honest - needs some research how they handle it if they do.

Affiliate system: you can bring people into the game and they make some extra satoshis from the rake to you.

Rake: only on 1/2(satoshi) it's 5% no cap - all above levels are 2.75% or even less with caps. So that is more than correct.

Come and see me at table. 1/2 still:)

https://blockchain.poker/#/?a=464dccb1#bitcoin