This is one of the fun parts of a beta, trying out things to see how the fit and how people engage with them. The intent of this change is to have the visuals match the effect so that to the person playing they see the cause and effect of the situation.
Right now the feedback is "Don't make it 5x5 as 7x7 is better" , that's fine its a good starting point for feedback but how do we drill deeper into this conversation.
Do people want it to stay 7x7 just cause that's what it is and any reduction feels bad? That is one outcome, maybe then we focus on enlarging the visuals to match that size. My point being we want to know why you feel how you feel about a change.
Does the extra size help in common situations or is it niche? The more information you can give to explain your take on a change the more we can understand where it is coming from.