They are very annoying. The only thing I know of right now is this: place a GP road under them to get rid of the pillars if there's room. If not, then I don't think there's anything that you can do.

GP roads sometimes work, but I often find it's easier to place the small mountains under the platform to get rid of many at once without having to use many roads.

I'll have to try that out myself

scripting on wiki

http://en.tm-wiki.org/wiki/Scripting

maybe someone can do a script for blockmix/ pillar removal

Optimusje says:
Not sure where FF would want this to go, but this seems about right. Anyways, a thread for small questions regarding the editor would be good I assume?

So how do i remove those freaking high cliffs? cant seem to get em down.

i have also had this problem....i know the right tool for the but sometimes it will not go down..how every try this
move the camera into free mode and move it to a better place so you can see the whole area now try it...
this works for me

or if that does not work for you simply remove with the hole tool ! then fill with hill block then remove..
i tried alot of ways when i first got the game lol

Zhuckar says:
Not to change subject or anything, but does anyone know how to remove those freakin annoying automaticly made pillars?

These pillars are annoying and I've posted about this on maniaplanet. In beta 1 there was an arena block that could be laid in lengths and not just one by one and this block didn't have pillars and I've asked if we could have it back.
I hope they put it back in.

Yep they are annoying as hell. ^^
One way to get rid of them is to place the platform pieces with tunnel under the other platform.
But I really hope they give us the choice to place platform without pillars (even better would be any kind of track-pieces without pillars) and yeah that platform piece that you can stretch would also be very nice to have.

Zhuckar says:
Not to change subject or anything, but does anyone know how to remove those freakin annoying automaticly made pillars?

one way to trick around it

yeah thats exactly what i have been doing!

Is it possible to change the mod (terrain skin / texture) once you've created the track?

I've downloaded a mod, and when I make a new track it ask me if I want to use default or the mod, but how do I change a track I've already made to use a mod?