Unless and until LJ goes tits up, I'm not moving over to DW. I'm certainly not backing up all my posts over there because it feel dishonest to pretend that's where I originally posted stuff. Fear not, I do have an offline backup using LJ Archive, which is good enough for me.
It seems, however, that at least some of my friends have decided to move to DW, with or without cross-posting. I do have an account on DW, though it is currently dormant, but if you want me to see things over there, can you please check whether you have given me access? I am heleninwales on DW too. I will try to remember to look in over there a couple of times a week, but it is Another Place To Check, and I'm at my limit with social media, especially since I was promoted to moderator on Habitica, which is now possibly my most important online home, closely followed by LJ.
If there is general movement DW-wards, I may consider cross-posting again. I've done it in the past, but it was tedious to keep it up. Right now I'm just planning to sit tight and see what happens, but if there is a huge influx of LJ-ians, especially a load of Russian bloggers, then I have my doubts that DW will be able to cope, so it might not prove to be the haven that people think it will be.
To be honest, if LJ does fold or become unusable, I'm more likely to move somewhere like Tumblr for blogging than cross over to DW, though ultimately, we will have to wait and see.