You're making an assumption we're all here because of BG 1&2. I'd be willing to wager most of the people getting the game are here for the Larian Brand.
But that is making equal assumptions about people being here for the Larian brand. Sure, the forum activity could easily be a vocal minority but if you say you make assumptions one way, you also cannot make assumptions the other way. I personally know more people who share my thoughts and wanted either a BG game or a 5e DND game rather than a Larian game.
I myself am here for the 5e experience game that was promised/advertised. I love the old BG games and enjoyed DOS (Though.. I think 1 was the far better game. Even though 2 was more polished combat wise, I feel it was just an "okay" game. Popular as it filled a niche and was flashy). It is why I am here on the forum as well, I wasn't for DOS1 and 2 even though I did play those a fair bit.
I do think if you advertise/promise a game as something specific (in this case being a BG game and a 5e experience) then I feel it is something you should stick to. It has its own ruleset and mechanics and even with its flaws (No system is without flaws really), it IS the system you have chosen. For a cooldown system, the game should have been DOS3, or any other custom ruleset (Like PoE did).
