>Bad as it is
Of course you get shouted down, you think your opinion is objective fact.
We made a new game out of it
because WE believed we'd have more fun if it was different, and we did.
But I think the people who would chose weapon-autism, wound tables, grappling and handgonners and creepy wizards that cannot into fireballs are a lot fewer than the amount of people who like frostgrave the way it is: a rules light excuse to have fun with their friends with a model count that makes sense for 28mm.
Going to the official facebook page and telling them that the game they're enjoying is bad is like going to a metal forum and saying that metal sucks, because classic rock is better. It's just a matter of opinion.
A thing can be good to one person and bad to another person, it's not something that you can, or should try to convince them about, not when it's something as non-important as what particular way you like to have fun with your toy soldiers.
If you're trying to critique the game, keep the designer's intent in mind. The only real way of arguing about the quality of something, is to keep in mind the intent behind it's design.
If you don't like the lack of detail, fine, but that could be a deliberate choice because the designer prioritized ease of play. That doesn't make it a wrong choice, just a different one from what you would have made because you have different priorities.
Except for true line of sight, true line of sight is a bad fit for a game where you often have to put a miniature where it can stand up, rather than exactly where it's the best to be standing from a cover standpoint.
As an example, the swingyness of the D20 might feel silly to some people, other people appreciate that it keeps fights uncertain and makes sure that even the guy with shitty soldiers has a shot, rather than auto-losing the rest of the campaign.