Stalker problem, feels like a ripoff

A few days ago, I had just unlocked the stalker armor mod. I never even killed anybody while using this. It’s cool that you can get easy revenge, but there is a few setbacks that make it not like it seemed.

1 Vehicles
I had run a few tests when I got the ability, and I found out that once your killer enters/gets out of a vehicle, you lose him. And that’s the problem with BTB, they constantly get in and get out.

2 Avengers
I find it really annoying that in the next few seconds, the player is dead and I lost him/her. I would like to track the player until I kill him/her.

So there’s one thing this is good at:

Players carrying special ordnance.
I never tried this out yet, but it’s good to know exactly where is the guy who has a special weapon (or a player that’s good, a camper, a n00b, etc).

And do you think the stalker is good or not?

In most cases it’s rather useless. Any standard Support Upgrade is better IMO.

I don’t use the Stalker perk or any of the other specialization mods to be honest.

I prefer just using the standard upgrades like ammo, mobility, or dexterity.

The only considerable one is the Wheelman mod. The rest don’t really appeal to me.