Allow change of frequency of noise layers for tiles

[Earendel]

I've been trying to change the noise frequency of the water, elevation, or custom noise layers to alter the distribution of tiles, but I can't get anything to affect the frequency. Adding a new autoplace-control also won't seem to affect tiles in any way.

I would like some way for this to be possible, there are a number of ways it could be done:
A frequency parameter on the "noise-layer" prototype
A parameter on the tile's autoplace property.
A parameter on one of the tile's autoplace peaks

Modifying the noise layer's largest octave frequency directly would be my preference as it would be much easier to do sweeping changes across everything that uses that layer.

If this possible already but I have missed the method of doing it then please correct me, but I asked the question in modding help and there were no replies, plus all my tests have had no effect on tile distribution frequency. (This is for the alien biomes mod viewtopic.php?f=144&t=38832)