Cool we have a logo guidelines page. Very professional!
I'm very fond of the monochrome logos.
However, Simutrans is not a registered brand, there is nothing other than politeness that keeps people from doing what we ask them not to. I think that really needs to be reflected in the wording. I.e, when we have to rely on others being polite and not abusing our logo, we also have to be polite requesting that.
In the header of the brand page it is referred to the Artistic License 2.0 (AL2) and stated that it will be explained in the following what is permitted. However, what follows are non-binding desin rules, not binding license rules. Better just leave the license as is. It is very rarely if ever a good idea to summarise license texts in your own words.
Who exactly holds the (so-called) intellectual property of the logo artwork? I think it is you alone? Perhaps you could consider cross-licensing it also under a fitting CC license, as (a) AL2 is not very well known, (b) a software license not that well suited for artwork. Both make it more difficult to understand what is allowed and what not.
For the page i think it would be good if a different version of the logo were used. The half-round one doesn't really fit. The square one would not match very well either when centred on the page. Perhaps a longer rectangular logo? Perhaps a version where the square logo is right, 'Simutrans' left (not certain if it works at all). If you keep a white box behind a logo that needs negative space around it much less transparency is needed. For this one no transparency at all, the logo is the most prominent aspect of the page, not the screenshot.
Back in 2011 when you made the wonderful logos, there was the idea to keep the sphere shaped for consistency with old logos and to indicate that a whole world is simulated or so. I think the logo is so well established now that one can do without the former, and the latter didn't work without a lot of explanation anyway. Perhaps have a slight change and go full rectangular for the main logo?
It is a good idea to include the link to the nightly page on the downloads page. However, now that the logo is so prominent, could you please try your skills at the moon again? (it as not the earth-shine or angle, but that a terminator line looks entirely different.)
The new pak page is much, much more useful. The old one was very nice, and fun to use. However, the simpler one now is just better.
Bug report, the boxes do overlap for me, at a 1280x something resolution, chromium browser. Screenshot, you included it already, as it happens in your example picture as well.
While these are a lot of points, this is meant as constructive criticism and suggestions. I very much appreciate what you did, it is going the right way.
Any chance of getting the blog/forum integration back? That looked nice, especially as the front page advertises the community.
I fear the blog will very soon return to its dormant state. Having had the same news for 3 years on the front page was not good at all. If there were more people contributing to the blog, you would have a much stronger point though *wink*.