While I do think GU has its fair share of issues (especially regarding new user onboarding and general UX), I find that they are in theory fixable with some dedicated effort. Core gameplay wise it's on par with many TCG/CCGs out there, so there's not that much to worry on that front. For many games, there's usually a breakthrough moment where all these gets fixed - even Overwatch looked janky in its early phases. Holding out for that moment in GU. Cheers!