We should focus on features, as many we can in the homepage. Once the users grow significantly, we can skip some and focus on our main strengths. Websites need change over time, because users' perception changes over time. Web devs should realize that.
You are right.
After looking at a lot of web pages of open-source projects including ubuntu.com, suse.com, debian.org, postgresql.org and the examples you provided I arrived at the conclusion that we should in a first step rebuild our home page. We have a lot of content, e.g. in the Lazarus Wiki that is hard to find, therefore a fast entry point would be useful.
I would suggest to divide the homepage in four areas in horizontal layers:
1: A systematic link bar, in some way similar to a menu bar
2: One or more screenshot and a large message (e.g. "Write once, compile anywhere")
3. Three blocks with a short description of Lazarus, current news, and a project of the month
4: Featured links (What's New, Case Studies, Services, Wiki, Bug Tracker etc.)
The following mock-up should demonstrate how this could be achieved. I tried to retain the traditional colouring scheme. However, this is, of course, one possibility of many.