459 wrote:I've got the impression that the "chance of breakdown" levels for different planes, making some more reliable than others, are pretty much unadjustable by TTDPatch. Someone please give more info if I'm wrong. The only thing that currently tells of plane reliability in general is the plane life.
You can adjust it, sort of. What you can change is the reliability decay rate. You can't change the maximum reliability, which the plane has the instant it enters the hangar. BUT you can alter how fast that reliability rating goes down afterwards. Thus it is a very similar effect, and pretty much works the way you'd want it to. So, you'd give the Comet a very high decay rate, which means that either you tell a Comet to ALWAYS go in the hangar when it's leaving an airport, or it will wear out and break down pretty quick. The US set uses this to emulate certain not-very-reliable locos, like the TurboTrain.
459 wrote:The adjustable planespeed is still high on my wishlist to make some sort of acceptable speed compromise

Yeah. I posted a request for that in the Suggestions forum, and despite 47 page-views, I got no answer at all. It's here:
http://www.tt-forums.net/viewtopic.php?t=9699
Take a look, make a comment in support. If enough people support it, maybe Patchman will do it. Or you could PM him with a special request.
459 wrote: And of course, bigger running cost adjustment range to give more justice for old props by penalizing jets with higher costs.
I asked Patchman about that, and he didn't have a ready solution. I think (hope?) he's researching it though. Maybe you should PM him and ask how it's coming along, if there's any hope, etc. Because we really do need it. He found a kludge that let us do it for the US set, but apparently the plane costs are less complicated and thus harder to fiddle with.