I get people seeing me when we are close or cross paths but more and more I think hide is ineffective beyond lvl 50.
Na Hide is fine as it is. As Cike said, the range that you see people in hide is determined by your level v's your opponents. I play rogue in siege and rarely have issues with anyone finding me in the manner that you suggested.
The only times I have ever had issues is when buffs like Thunderforce run out....it also pulls you out of hide, which can sometimes go unnoticed.
It's a lot easier than you think to predict the direction a rogue will go when they are in hide, which is always followed by "H@CKER!" when they die

(oh and yeh, never use Yawaka's...worst skill any rogue can use if they want to go sneaking around lol)
And of course there are those that use those 'programs' to see rogues.... yes there are people out there that use them, but it is usually rare to find (I have fraps of 1 guild in particular that did it consistently against me >.>)