What do I mean?
I mean I spend a ridiculous amount of time making brushwork objects like the aircraft featured in lollerskates2, only to end up with something not-brilliant looking that could be done a lot better as a model.
And lollerskates2 is certainly not short of features.
o Fully flyable, acurately scaled passenger aircraft.
o Several vehicular stunt areas.
o Buggy & Airboat armour. 90% bullet-proof. Will stop a combine sniper shot. Comes in 4 designs, all with sliding access doors.
o Fully operational teleport system, with map/diagram for ease of use & visually pleasing teleport effects.
That's maybe half. It spawned purely from ideas myself, Urbanebula and Livewire had while playing gmod together. I'd add the idea to the map. We'd play it, then think of something else. I'd add it and the process would repeat. It's a very efficient way of mapping, getting instant feedback.