I know what you mean Kenny. It would be nice for us though not to have to keep going back and getting another one each time.
Like I said earlier we actually prefer to queue, if it's a reasonable wait time, as we just want to do what everyone else does and it's better for Joshua we feel.
The one thing we find with the Universal GAC, depending on the CM or attraction, is you often have to explain yourselves about the disability factor whereas at WDW the card is instantly recognisable as a special assistance card.
One year at ET we arrived at a fairly quiet time but wanted to skip the pre-show, produced our GAC (express pass) and after a brief explanation were shown in through the back door and everything was fine, Joshua wanted to ride it again

, once more no problems.
However, on wanting to go on it a third time (don't ask!), the CM had changed and wasn't as co-operative, he wanted to go and speak to his manager about it, and we were like it was ok in the past 2 times 10 minutes ago! There was no queue whatsoever he just couldn't handle the fact it was a special needs GAC and not just your regular express pass.
A lot of it therefore comes down to the knowledge and friendliness of the CM.
I completely agree about the 'looks', bearing in mind Joshua gets out of a wheelchair and walks, we have started using some nice Autism awareness T shirts purely for him, one's that look cute but have a message also.
We didn't feel comfortable at first with them though.
We just try and focus on the enjoyment of the situation , we used to be a lot more sensitive about it than we are now, if we thought and looked for what other people did all the time it would be a nightmare and just spoil the fun, so if we can queue we do.
He will patiently wait now, much more so than previously.
The thing others need to understand is like I say we just want to do what everybody else is doing, it's just not always possible, Joshua doesn't look disabled at all, but that's Autism for you.
We even had a run-in with a CM in 2006 after comments they made about him, and there was a time we were kind of looking around for problems or reactions from people, kind of like waiting for it, which isn't ideal at all, especially for them as I might have throttled someone!