OvO:
Getting Beastmaster and Pitlord as heroes, shamans and batriders as unit choices, dunno yet if fast tech, fast expansion or standard build would be best for it.
Why like that?
Beastmaster: at the beginning quillbeasts are more useful than wolves imo, and if enemy gets blade you can always take the hawk (which is pretty useful against orc anyway). Also you should get slight advantage because tavern hero usually comes out before the altar one.
Pitlord: well, this choice might be controversional but his rain of fire could prove very useful against usual kodo/walker/cata which is such popular in this matchup nowadays. Also rain of fire is very useful in countering the tower rushes (very popular too) and harassing enemy barrows. And doom is one of the best ultimates in the game.
Shamans and batriders: Shamans could own most ground with mass lightning shields, purge is useful against usual FS/FL hero choice. Batriders because they own standard kodo/walker/cata, at t3 would be great for the basekill strategy and are hard to counter for orc (he would be forced to either go for trolls - which would be owned by shamans - or bats too and in such situation you should have advantage as you started to make them first).
What do you think about it? I'm not really sure if this would work, will have to do some testing as I think that the unit choice could go wrong.
And some questions concerning UD vs OR or NE (have problems with this MUs):
1. You think it's best to go:
a) Fast tech, single base
b) Fast expo, slow tech
c) Fast tech -> expo when t2 is done
d) Moderate tech/expansions
2. Best start against orc:
a) Ghouls (tend to get owned too easy when he gets 2nd hero)
b) Fiends (hard to keep alive when he rushes early)
3. Starting hero against orc:
a) DK
b) CL (with fiends and beetles)
4. Late game against NE:
a) Fiend/Destro
b) Abo/Destro
c) Abo/Fiend
d) Fiend/Casters
I know some of those questions depend on what enemy makes but I was wandering how most of you try to handle the situation.
Edit:
Sidenote: Don't you think that orcish raiders are simply insane? They're cheap as hell and when enemy has 2-3 of them and wants to kill your hero he will succeed 90% of the time