I'll let you in on a secret – 750 rubles is practically too much for any game; it's a mockery of the price. No, there are a few masterpieces that might be worth it, but Heroes 7 isn't one of them.

It's a raw product, like a beta version with a ton of balance issues and bugs. They only fixed the most critical ones.
I think it's worth buying when the price drops and/or some clever guys from heroescommunity release a fan-made patch. If they do.

I think the same way. And even more – I now have a thought: why don't all those who bought it stage a massive "complaint" against Ubisoft? People paid for a full-fledged product, but they got this *a long list of all the unfinished parts and shortcomings*. A year has passed, and now there's no further support in sight. Next, suggest options for getting out of the situation – resume support and bring the project to completion, return the money, or make the project open-source and hand it over to the community to be refined with mods by skilled enthusiasts (I think this is the most likely way to get a decent game in the end).