The first three boards coming will have the D2PAK 3.3 volt regulator.

I suppose one way to avoid having to just throw those boards away would be to build them with DOT050V oscillators instead of DOC020V ones. The former is a TCXO instead of an OCXO. Its stability is ±50 ppb instead of ±20 ppb. There's no particular reason you couldn't make the swap, and the TCXO requires vastly less current.

The downside is that using them in place of the OCXO only reduces the BOM cost by around 10%.

Maybe I'll build one just to see if there's a measurable difference between the two final products. If the discipline is capable of keeping either one under control, then getting rid of the high current and thermal problems would certainly be nice.