new trinket - weaker replaceable purple ward
etc
What if a new style of purple ward trinket with only 2 hits were created that could be picked up. This ward could have a lower sight radius than a standard trinket ward, but it could be dropped as a kind of mobile stealth detector. It would take the place of your standard trinket, but would have to be re-purchased if destroyed. You could drop it just like a ward, but to pick it up would take the same time as your recall spell (so you could take the utility mastery to reduce by 1 second). This would mean that during battles/high-pressure situations, people who relied on stealth could fairly easily destroy them with a couple auto-attacks, but it would allow people to tread carefully when they wanted to.
It could only be picked up after being placed for 10 seconds, so people couldn't just spam them to avoid their destruction while getting free stealth detection. Whenever they picked up, its life would be reset to 2 hits.
Additionally, this trinket (if placed) would count towards your 1-limit purple totem, so people could not have both this and the purple totem trinket active simultaneously.