Recently I've been trying to improve my terran skills. Protoss is my main. I wanted someone to give my advice from the two replays attached. Both are 2v2v2v2 Hunters games. I consider myself an above average melee player.

Don't try other races unless you have a very solid protoss. Solid means that you are atleast C+, proficient in all match ups with your main race. You are also able to do all kind of strategies and meneuvers. You have the feel and counters for every opponent builds. Unless you reach these, do not try other races. That is my advice.

I like to think I'm pretty good with vultures, and the one thing i noticed that was wrong with yours is the lack of ion thrusters.

If you're going to micro with vultures, you'll need to use them against infantry mainly; most infantry is quite fast, hence the need for ion thrusters. Spider mines should only be used if you know the vultures have absolutely no chance of winning otherwise, like if ambushed by dragoons. Course, the situation with the tanks in the second replay kinda called for early mines, but y'know.