This seems to have been fixed on WoO, has it been on WoT? Are you still experiencing this?

I was wrong, at least, for some sites :P

It is stated on most of the club pages that "You will only recieve a response if you are accepted onto the team". 
If a user cannot handle not getting a response, they shouldn't put themselves into a position where they may not get one.

It's understandable that some people do put a lot of work into the application, but some people also don't and it wouldn't be fair for leaders to need to reply to each and every one of those, even to those who don't deserve it, however, it's also not fair if leaders picked which they considered had a lot of work put into it and who didn't, as everyone is different and a lot of work for one may be an easy feat for others.

Some people apply only for the job. Others apply for the job, but they also want feedback to improve. For those who wish to approve, asking shouldn't take too much effort. 

Some WoX sites do this, as the statuses they have are more common IG, however, with WoP, these aren't as common and wouldn't be very realistic to have so many at Hogwarts.

It also specifies you need full names.

Many times leaders don't decide a for sure YES or NO to an application. For example, there have been times where I had 2-3 good applications, but only one position open. I hired the one I thought was best. Now, according to this, those other two would think they didn't have good applications and would be told they were rejected, however, a week later, another position on the team opens up and I go back to one of those good application to hire them. 

Many leaders go back to previous applications that they weren't quite sure about or didn't have enough positions open for.

If you want feedback to improve, then you can owl the leader to see and you may get feedback on it. 

This would be very helpful!! ^^

I'd suggest messaging the Minister or Headmaster of your site so they can help you further! 

Not disagreeing with your idea, but until this is a thing, you can use ctrl + F on your keyboard to search for the item! 

This should have now been fixed :)