OK, here are some gameplay changes that I've coded, and am considering to include in the next test patch.
LADDERS
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1. Only single-handed weapons allowed, so no rifles or shotguns, and no akimbos. The player switches automatically when he enters the ladder. Press lastUsedWeapon (default Q key) to go back to previous weapon configuration after leaving the ladder.
2. Disable altfire in ladders for pistols. The right mouse button works as primary fire, to avoid confusion.
I think this is enough to counter 'ladder camping' on Train etc, but I'm open for suggestions.
This will of course make people camping on the roof in Tillan or Town harder to kill, but making explosives cheaper might help with that.
OTHER STUFF
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1. Made people move slower while reloading, to make it easier to knife them.
2. Made altfire faster but less accurate for pistols.
3. Made ammo belt not affect how many knives and explosives you can carry. 10 of each seems enough.
Please post your comments.