To add onto it as someone who is a mine nerd, for context I have 5 stared 2 mine weapons in rapid and tent, and the only other 5 star is vtent.
Mine is a really good get off me tool, or area holding tool. For eliter in particular, its an amazing get off me tool as it gives them time to jump or partial whoever got hit by mine. The other and better way to use mine is to put them in areas ahead of where you want to control. So for example, if you are holding zone with the goal to KO. You would place mines where the enemy team has to drop down to get to zone. This hits them for 35 or 45 damage which shaves off a shot or two to kill for you and your teammates(you might hate them, but they defo help and benefit from it).
The reason you place it in front of where you want to hold is that when they trigger it, they are forced to make a choice. Because it paints your feet, they have to choose if you want to back up and pray they can't reach you as you paint out. If you go forward they have to deal with the damage they just took and pray they don't hit shots. And if they somehow win that fight, they have to deal with the tracking effect and the 3 teammates you have looking at your ouch. You also get time to pick what you want to do, if you have short range it gives you time to back up. And if you have long range you get to choose if you want to back up or kill them safely.
Mine is a super helpful tool and has a lot of potent strengths and cheese. For example, did you know that the radius of sub power mine can match sploosh's range? I don't remember the exact cost of it, but I think 1.3(one main, 3 subs) sub power gets close to, if not outranges it. The tracking and damage radius of mine stacks and increases really fast, if you have the room to I recommend running 1.1 sub power on mine weapons. This might sound niche, but it lets you place one mine to lock down an entire area. It paints over someone and is more likely to hit them for 45 damage, and if someone is going with them they'll probably get caught in the 35 damage hit. If you use two mines, the radius to hit someone for 90, 80, or 70 is frankly absurd.
If you want more cheese, did you know that with 1.1 sub power you can half cap most full zones? You do it by making sure it has full room to explode and paint over the zone. This is helpful as if the enemy team trys to cheese zone, it half caps and you need a bit of paint to instantly recap zone. If you set it up right you can stop reef cheese as well. For smaller zones, just one mine is enough to half cap. For the largest zones however, you can't half cap with only 2 mines
Edit as I forgot to talk about it
I honestly prefer the mine in 2 and 3 compared to the mine in 1. Using the extra utility of two mines and sub power is super nice for more options that you can always follow up on. S1 mines could be a bit harder to follow up on safely as if it doesn't kill, it doesn't paint their feet a lot. Compare that to 3 mines where if you are really fast you might be able to parry the mine before landing in enemy ink with someone wanting to kill you