Hi,
I can only stress the above mentioned points about adding the dxf file format to affinity designer. I'm studying product design and much to the confusion of my professors I'm blown away by the affinity suite, making the adobe cc pretty much redundant to me. But every few days I'll struggle to just cut out some designs on my laser cutter because I either need to use Solidworks/Fusion 360 to create the paths instead of AD, or I need to go through svg export and weird online file converters that will always mess up my dimensions.
Thank you for a generally wonderful product line-up but please finally add the DXF file format both for import and export. According to this thread this seems to be an issue for loads of people since 2014.
Cheers