FollowRegarding your recent notice email, I am writing to express my thoughts on the possible changes in the membership fees.

First and foremost, I would like to thank that you arefor taking members' suggestions into consideration.

As you may know, we have been charged with several fee increases have occurred over the last few years.

I find it more fairer that old members are paid less fordue to their loyalty club.

Additionally, I would appreciate it if youwe could set up a meeting where we couldto discuss this matter further.

Dear sStaff at Easylearning Club,

We usually just use "To Whom It May Concern."

FollowRegarding your recent notice email, I am writing to express my thoughts on the possible changes into the membership fees.

First and foremost, I would like to thank that you arefor taking members' suggestions into consideration.

or,

First of all, I would like to thank you for taking members' suggestions into consideration.

First of all, I would like to thank you for taking suggestions from members into consideration.

I would, however, like to complaivoice my concern about the idea of introducing a new additionalyet another fee.

"complain" is very strong.

As you maleady know, we have been charged with several fee increases over the last few years.

The result of this is thatBecause of this, a large number of people have left the club.

What I propose is that extra fees should be charged to new members only.

I find it fairer that oldexisting members paidy less in return for their loyalty to the club.

Additionally, I would appreciate it if you cwould set a meeting where we could discuss this matter further.

I hope to receive an answer back from youlook forward to your response.

Dear staff at Easylearning Club staff,

Following your recent notice email, I am writing to express my thoughts on the possible changes in the membership fees.

notice just sounds funny. I guess technically it's extraneous( extra/not needed)

First and foremost, I would like to thank that you arefor taking members' suggestions into consideration.

As you may know, we have been charged with several fee increases over the last few years.

I would find it more fairer that old members paidy less for their loyalty club.

Additionally, I would appreciate it if you could set up a meeting where we could discuss this matter further.

I hope to receive an answer back from you.

Yours is fine. Less formal(what I would say) would be, "I look forward to hearing from you"

Dear staff at Easylearning Club Staff,

Following your recent notice email, I am writing to express my thoughts on the possible changes into the membership fees.

First and foremost, I would like to thankappreciate that you are taking members' suggestions into consideration.

As you maprobably know, wthere have been charged with several fee increases over the last few years.

The result of this is that a large number of people have left the club.

What I propose is that extra fees should be charged to new members.

This isn't gramatically incorrect, but saying, "What I suggest is..." would sound better/more natural.

I would find it fairer thatif old members were to paidy less forbecause of their loyalty club.

I'd use the conditional here because you're talking about something that doesn't exist or isn't happening right now. Your original sentence makes it sound like old members are already paying less expensive fees.

Additionally, I would appreciate it if you could set up/arrange a meeting where we could discuss this matter further.

I hope to receive an answehear back from you.

Your original sentence wasn't exactly gramatically wrong (except we would say "I hope to receive an answer from you"), but it sounded stilted and unnatural.