On ETH in near future we can expect the bull market. Problems will be resolved fully. I do not recommend opening any positions in margin trading, and wait for signals from developers.
the problems will never be resolved fully. it's too darned complex and i'll bet the developers can't keep up with the new holes that keep appearing. there's definitely money to be made but i don't expect much of an actual future for it. its ideas might spawn something that actually gets the job done some say.
The price of ETH depends on the actions of the big whale.