It seems to me that the front fork with its parallelogram structure is more solid than the rear fork with a single fat arm without structural support and it is easier to put an anti-torsion arm on the front.
The problem I found is that only two motors fit in it.
The 4.5 kg crystalyte 406 and the motor of the Xiaomi QiCYCLE EF1 bike, only 1.5 kg.
First I am going to try with the crystalyte because they sold it to me with the rim already installed
The other one I have to assemble myself and it will take me a few weeks when I have everything ready and if I am not mistaken when taking the measurements of the spokes