IMO I think a lot of socialists need to focus on... well coming up with more solutions to the collapse of the soviet union. I'm not an expert on it, but I know enough basic history to know... the soviet union imploded. Fact is a lot of the first world capitalist countries are stuck in the propoganda of "we tried it, it failed". The reality is like every system and every event in history, they did some good things and some bad things, and a propor system takes the good, refines it, finds the bad parts and cut it out.
At least to my really limited history knowledge, I'm sure a large part of it was the dick waving contest with the US and capitalist countries. Obviously Lysenkoism was an extreme case of horrid stupidity that made the food supply chains 100x worse.
The point is, if we want to sell the world on communism, we can't just point to things and say "See USSR did this, and it was good", without making a case for it having done good in the USSR, and not allow it to be assumed to be part of the collapse of the USSR.