Upgrading Alternator

The problem is that there is not enough amps flow at an idle to supply the lights, brakelights, turn signal all at the same time and have them all work at full speed or brightness.
You know how when you speed up from a stop or rev the engine, everything seems fine?
The alt needs rpm's to charge well, so I don't think upgrading your alt is goin to help.
Have you noticed how your turn signals slow down at a stop?
Same thing.
Unless you upsize all the wiring involved your not going to change much.

I have actually considered using an electric motor to run the alt at rpm to overcome that since they seem to only need about 1,500 rpm to charge at full output.
Also, it wouldn't matter if you had to use a motor that was drawing a fair amount of amps either if you alt was putting out 70 amp all the time right?