So far this year:

C70 club at EWR -- three agents out front, 0 agents inside. All three agents said for rebooking my choice was to waste time with AOD or go to the customer service center. "we can't do anything" -- given this club has the "self-admitting gates" that stuck me as an odd staffing/policy decision as, indeed, it's what I ascribe most of my UC membership value to.

About a week later, C130 club at EWR - three agents out front, 0 agents inside. The one agent who acknowledged my presence when I popped out from inside the cliub claimed they had 'no way to know' and 'crew scheduling wouldn't tell is if we asked' the answer to my "where's the crew we're waiting for coming from" question. Amusingly when I asked a different agent at a different airport when they took that capability away and they showed me three different ways the agent could have pulled that up (in SHARES, in AERO, and in Gate Explorer) -- and the total demonstration took less than 3 minutes.

Oh also the EWR A club has no space for agent assistance in the club (the one agent inside is very explicitly an Air Canada only agent), but so far other than having a BP printed (because the kiosks and I weren't getting along) I haven't needed assistance in A (knock on wood since it looks like that's where I'll be tomorrow afternoon)

On my last pass through Newark the customer service center UC agent #1 had me use was barricaded off which is a disturbing and increasing trend across the system -- not sure why UA is so hellbent on giving such a visible middle finger to passengers. (Fortunately this was the arrival end of a single segment with nothing remarkable so I didn't need service but just because I got lucky...)