The store needs a big fat search bar on top, on the main page.

Each game page needs a link to the games discussion subforum.

Why do most of these games lack achievos while Steam's version has them?

You want to give me Everspace? Great, but why can't I click the Everspace icon to take me to Everspace store page?

You're making it hard for me to want to shop here. It doesn't have to be.

So if you are using a browser, the store page does have a search bar, albeit it's not immediately visible. If you look at the top-right corner you will see a magnifying glass, click that and a search bar appears.

In the Galaxy client the store pages do not have the search bar, but you can still search directly from the Galaxy client by using the search bar in the left-hand pane, just above your installed games. Type your search in the box, and below that will appear "Find (search term) in store". Click that and it will show a full list of games matching that particular search term.

I do agree that the store pages should have a link to the discussion forums, and that the tiles for the free games should link to their respective store pages. Hopefully GOG will update that at some point in the future.

Regarding achievements, the developer would be responsible for porting those to Galaxy. Some developers just might not feel it's worth the extra work, especially if we are talking about an older game. You can certainly let the developer know that you would like achievements in your GOG version of the game. If enough people ask, they may choose to add them.

Formost the website problems, Barefoot Essentials can fix them.

As for your want for achievements, I thought we were all generally over that by the time we came here. Most old games didn't have them anyway and many newer games have them internally contained.