If they release the game with a few more maps and allow players to conquer regions of the solar system through battles (similar to community warfare in MWO), this game would definitely be worth at least $50 in retail value. Add micro-transaction for cosmetic items and you'd have a viable business model. As of now, majority of the problems related to this game (balance, population, grind) are related to their tiered progression model.
Well I'm sorry to say, but this game would die in a B2P model with an 50-70$ price rather quick, since in terms of quality and 'completeness' it resembles indie games a lot more.
For 50-70$ you can get games like Horizon: Zero Dawn, which is light-years ahead of Dreadnought in terms of production quality.
People aren't stupid, they won't pay the same price for something so noticably inferior. One exception is, when the game's universe/lore sells it, for example Warhammer titles have been abusing that name and asking ridiculous prices for half-baked games for many years now... but it works because there are a lot of Warhammer fans out there.
However Dreadnought isn't set in any known fantasy/sci-fi universe, and doesn't seem to bother a lot with building one either. The sci-fi setting here is quite generic. So all you have left to win people over is production quality, but the game is lacking in that department as well. I'm hoping it will change, but - looking at how little the game changed since OBT launch - their development speed suggests otherwise... By now I assume it is quite a small team working on this title, and with that you can't really 'redeem the world'.