There are 2 Issues, As I see it, The homework Level questions are being closed by the moderators often, even if they are precisely posed and well defined.(Link 2) And they do not get the attention they deserve.
Second is, The site is getting cluttered. On an average day it sees, ~40 questions and tends get very cluttered, and many interesting questions do not stay long enough for people to take notice.(Link 1)
There have been some suggestions including my own( Link 3,4).
How do you think physics stack exchange will scale as time passes? Do you think it will be able to handle say twice or thrice the amount of traffic, Which is only a matter of time.(There has been a 3 fold increase in questions since 2011)
Do you find the site to be getting cluttered? If so, Can Something be done about it?