Yeah those are true. Max profit changes dynamically on every bet, and maximum profit on Win is 1% of bankroll.
No fees or grace periods on divests (But please don't spam it

)
Also, the profit that you see, is the profit that you get. 
That seems one of the most important points, thanks
The profit is not stable at all. There are huge ups and downs. So unless you plan to invest for long, you may not be able to see the profits. It is better to invest in real world stocks and bonds that constantly pays you dividends.
Though I certainly agree that holding stocks of such companies as Apple, Google, Microsoft, et cetera has been profitable in the long run, either through their stock going up directly or through dividends, that's not the point of investing bitcoins. We want to grow bitcoins while keeping bitcoins in the hope that we will profit twice here too, both through Bitcoin appreciating and through our investments earning a few satoshis as well.