rustle,
I'm a very average private pilot and I find lat / long very confusing and difficult to visualise. Frankly, I tend to switch off when having to figure out which lat / long are relevant to me. It just ends up in a big splurge of unmanageable numbers in my mind.
That's why Notamplot was so brilliant. In this context, therefore, I don't think a graphical representation of data is a 'Nice to have', it's an absolute essential. Many people can cope with sifting through a lengthy list of lat / long. Many, many more can't.
If they're serious about flight safety they will deliver the info to the user in the most easily interpretable fashion, a fashion which even an idiot could interpret, because, let's face it, many pilots are idiots.
So, yes, either concoct a GUI themselves or let notamplot fuction once more. This, I think, is urgent.
QDM
P.S. Look at this useful bit of advice mrcross has just given us to help interpret the ais site:
Helpful though this advice is to the technologically abled few, this proves conclusively that you need to be an obsessive geek to be able to use the site. It's a hopeless mess.