So about Oracle's

I've noticed that in the rift true sight has been steadily decreasing. Duskblade allows you to see wards, and you can get red trinket or a pink ward to counter ward. It's not really relevant fighting against people with invisibility. Camo was implemented so people with true invis could use it in a fight or escape, and it makes sense. Camo is a good engage, invis is for during the fight. So why is oracle's still an issue in ARAM? Fighting Shaco? Kai'Sa with attack speed? Kha'Zix? Anyone with traps? Teemo? It completely removes invisibility from the picture, in a mode where its crucial. Pretty much everyone I play with rerolls if they get someone with invis because its useless. Maybe its a dumb complaint to make, but you can see there's quite a few people who become boring to play because you can't use the important part of their kit. So is there any reason to leave in oracle's other than a "balance" that breaks the character? I'd love to hear some feedback from people who might play stealth less than me.