That's a start, but rogues can still use a bow from outside of their cone of sight (bow range is longer than enemy sight range) and still cheese it just as easy.
I tried to do this with the build I and press got to play in Ghent last week and didn't manage it. Every time I attacked from out of range (even hidden), initiative was rolled and there was no new stealth roll so my character wasn't hidden after attacking.
I'm not saying it won't be cheese-able. I'm sure folk will manage! But it definitely looks as though it'll be much harder.
PS We have a
megathread on stealth and ambush where I'd suggest this discussion is continued.