Ideas from last game:
- it should not be allowed to found new cities or extremelly expensive (one of reason is that some people found them to intentionally harm others intentions ... look around Ostrau and Venedig (Venezia) in current game. Someone founded new cities to prevent me to build these two up more.
- terrain forming could be restricted somehow (Ive seen good scripts at btpro.nl servers)
- planes should not crash because they are useless (not really profitable) when compare to trains
- maintenance of stations should be expensive to prevent players from building too extensive station without proper utilization of them and to support players to remove not used stations
- Some rules about occuping cities ... it cost a lot of time to build up a city. So who first come to a city, the city should be his/her ... or something like that.
Some good rules (but sometimes too restrictive) and good rules can be seen at btpro.nl servers