Possible Tier Changes?

Just thinking out loud here:

The reason for the $5 benefit for the AMA was so I wouldn't be overwhelmed with questions every month. As it is, I'm generally answering between 1 and 4. So I'm wondering if maybe dropping the amount will enable people to ask more questions while not getting too unwieldy?

If I dropped the benefit from $5 to $4 or even $3, how much of a difference do you guys think it would make? I could then add a different benefit to the $5 tier, such as maybe giving a shout-out to your channel or website.

What do you guys think?