No, well, it depends how you want the PSU to work.
My reasoning was that if you were going to use anything other than your car ACC line for the remote (for example your radio remote out) then you cannot draw the +5VSB off of the remote line (because it can take up to 1.2A on spec and 2.4A total). If you use a shutdown controller as well then you can still leave the remotes attached to your radio (or anything else that provides a low amperage remote signal, or low amperage switch with small wires).
If you are going to use a shutdown controller, then there is no need to use the remote lead at all, just tie both of them together.
If you are going to use the ACC line for remote then yeah, you can just tie the LM340 to remote instead of the unswitched +12V in.
However I think that it would be better to add in a single 2N2222A (current limit of 600mA which is > 500mA ATX spec) and then attach the remote line to that, and leave the LM340 attached to +12 unswitched. But it's really up to you I guess.
How are you planning on powering your PSU? Directly to +12v unswitched and ACC or through a shutdown controller?
Part of the reason that I left the connection as a jumper instead of a trace was so that you could decide yourself where you wanted it to go. If you want to switch it to the ACC line then it's relatively easy to do so without changing the PCB itself.
Do you have a digital camera? I'm really anxious to see how this works out and how it looks. I'm a little worried about traces being too close together and too thin so I have been modifying the layout a bit to allow for a larger seperation between traces and thicker traces. Make sure to tell us how it goes?
What modification did you do to make the relay click?
It you can, put a heatsink on the LM340 as it would be advisable (it'll burn off up to 3.5W if you use a full 500mA ATX spec or 7W if you go crazy and use the full 1.0A available. I don't think it's absolutely necessessary as you should never really use more than ~200mA or so on that rail (but the 100mA that it was set to before was nowhere near enough) which should be enough to operate without a heatsink. Check the PDF file for that component to see what they say. Better safe than sorry, I put both those 2 components right next to each other so that you could easily add a heatsink to the both of them.