michael blunck wrote:1) Simply because "OTTD´s features" aren´t those things to be seen on the pictures, but "only" that part of code which allows to load "foreign" .grfs (e.g. mine aren´t "for OTTD", neither are part of it. Look into the donotreadmes, they´re "for TTDPatch").
Well, apart from things like signals, track foundations and whatever else is in ttdpbasew.grf these days, the majority of GRFs don't "belong" to TTDPatch, either. Some of them have authors who'd prefer them to be used in TTDPatch, but many these days are designed with both games in mind. I see no reason why these can't be shown in the screenshots (perhaps with a caption saying "Screenshot showing [blah blah blah], using custom graphics sets").
michael blunck wrote:"The average user who comes across OpenTTD" may be misleaded to think these things be part of OTTD, which they aren´t: the majority is part of TTDPatch, GPL´d or not doesn´t matter.
As I said in my first answer just now, the majority of these "things" aren't part of either game. Some may have originally been designed with TTDPatch in mind, but they still work fine in OpenTTD, so why should they not be showcased.
michael blunck wrote:2) Screenshots like these have no special meaning for OTTD. They´re looking like from TTDPatch. Is that aimed for?
For the most part, OpenTTD
doesn't look much difference to TTD(Patch) anyway! Obviously, when the OpenTTD Graphics Replacement project is complete, things will look slightly different, but for the most part, the games do look very similar graphically. You could just as easily look at a TTDPatch screenshot and say "that looks like it's from OpenTTD".
michael blunck wrote:That´s another problem. Look under "copyright" ...

Well, yes, but in this case, "fair use" is probably applicable. And, in addition, the aforementioned graphics replacement project will hopefully be ready for one of the next major OpenTTD releases, and can be used in screenshots then.