Now that I've experienced the heat put out by the 3-section filament dropping resistor, I've been thinking how it could be eliminated.
I crunched the numbers and came up with about 97 volts consumed by the tubes including a 6.3 VAC replacement picture tube. If I assume 125 VAC at the plug, a 20uF AC capacitor would do the trick.
However, those two taps are there for light bulbs that illuminate the VHF and optional UHF channel knobs. I did a little research and found there are 130 VAC white LEDs available in a BA9S base.
They're a bit harsh compared to the yellowy incandescent blub, but work fine.
I figure I'll give it a try and if I don't like the results it's easily reversible.