DSD Importer Settings add low-pass filter choice

I found xld-20181019's DSD filter can't choice low-pass filter. When I convert a DSD to 88.1kHz Flac, find many quantization noise above 30kHz. Could Xld add noise filter choice? I found some knowledge from https://kb.roonlabs.com/DSD_to_PCM_Settings :

The 24kHz filter results in frequency response characteristics that are nearly guaranteed not to offend your PCM gear, but this involves placing a filter fairly near to the limits of human frequency perception. It's a conservative/safe setting.

The 30kHz filter is the best compromise, it's the default in Roon, and what we recommend for most users. This setting nicely removes nearly all of the noise spectrum in DSD, while leaving some space between stuff we can hear and the filter itself.

The 50kHz filter preserves significantly more noise (especially during DSD64 playback), but is even less likely than the 30kHz filter to muck with frequency response in an audible way. This doesn't mean it's "better". It's possible that with some gear, this filter will sound worse than 30k depending on how the gear reacts to the HF noise.