Just FYI, those were not complaints, just friendly observations

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My biggest bummer so far was the fact that you can't found a colony in a landmark sector. I don't remember it being mentioned anywhere explicitly unless I wasn't paying attention. I've built a colonizer and started to move it towards a golden level landmark sector I was drooling over from the landing. Next turn, I suddenly noticed this sector doesn't have a "can colonize" icon when the colonizer is selected. Not sure why I haven't noticed it the turn before. Only then I realized I cannot build a colony on landmark sectors. I had to redirect the colonizer to a neighboring sector and, later, annex the landmark sector, but I've lost 1 turn doing so

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Yes, I know there are "can found a colony" icons (when a colonizer is selected) and "potential colony" entry in sector analysis view, but still ... would be nice to have it mentioned somewhere explicitly.