Second this!

You should get an assist if you stun/blind/suppress/crash an enemy even without doing damage.  An assist should be for actually assisting in killing a mech, not just damage but controlling the mech as well. 

Exactly, not to mention that you don't get assist if you damaged mods only 

There are a lot of things that can be improved in achievements. You rightly bring up one, but I think there are far more difficult achievements. There are the arachnos turret achievements, which are near impossible gven how weak the turret is. There's Aegis' achievement to block javelins, which is totally out of your control. For someone like me who ranked up paragon a couple of times, the autocannon achievement is a joke. Guardian has an achievement with RPGs, some mechs have achievements for carbines which nobody intends to get, some achievements need you to do the objective 7000+ times as if we don't have lives, and more. 

It really needs a holistic revamp.

I absolutely agree.

 I posted a thread like that before, and all I got was "We currently don't plan any changes to the achievements."

At least the rewards need to increase. 20 Fortune keys for 100% achievements are ridiculous.  

agreed 

Hello! Thanks for your feedback. We will definitely rework and actualize the Achievements in the future, but it's not a priority for today.

I must be in the minority with this one. Using pod guns, I find I usually have other players, mostly people in clans, trying to see what I am attacking so they can rush to kill it first. I get a decnt amount of assists, but I still get more kills.

I agree. I didn't go into specifics but that's one reason I mentioned there are other achievements that are more difficult. Also some weapons that are basically "assist magnets" are stasis beams, thermal lance, and the early tier assault weapons including pulse cannons :-).