The production of these monuments would have been part of the Purges, so I can't say I'm dissapointed they weren't built. Like all the other great construction projects under Stalin's regime, like the Belomor canal, it would have required vast numbers of forced manual labour. If these projects had gone through then no doubt countless more would have died in their construction, not to mention the many more who would have been dragged into the gulag system, simply because more labour was required. Yup, communist architecture at its best, not only pretty but also helps to remove opposition.