Ya, but I don't think any race should have to choose one hero in order to be viable. I think with Elf you can choose many different heroes and they work. With human, all but the Bloodmage are viable hero picks. Even orc have many viable picks, it's just that BM is always chosen due to his imbaness. Undead are reduced to one hero, unfortunately, in competitive play. I think a DL buff is in order and long overdue.
Also agree with Zith, about wood reduction for necros. That could help vs air. Cripple, which is something I rarely see out of UD, can totally own Blademaster/Air.
By the sounds of your posts in this thread you don't know enough about the game and frankly aren't good enough to understand what's balanced and what isn't. Elf can choose DH and mmaybe Warden against human and UD. Not 'many different heroes and they work'. Whoever complained about level 3 hex being too long, WHEN DO YOU YOU EVEN SEE LEVEL 3 HEX. You would need a level 7 shadowhunter before you saw that skill picked, obv heal level 3 first. Considering FS is the best hero versus Undead, if you buff him UD stands no chance whatsoever in that matchup. And for people complaining that orc spams, its so stupid. Isn't every race 'spamming' in every battle. And if not, then Orc spamming means they aren't microing and I'm pretty sure regardless of the race in this, if you aren't microing at all then you lose. I play Orc and UD and people who cry about Orc are just babies. All the matchups are even except UD/Orc, quit crying nerf please.