After all those changes, he can have his Q restored to default. Its no longer OP.
His W skill can be slightly boosted by damage(up to 500).
Clockwerk:
May use some buffs to his Q for around 55/75/105/145
His ulti may deal 500/750/1000 damage.
Dragon Knight:
His Breath Fire dealts not enough damage. make it around 150/245/330/425 (Changing this skill would also buff the Dragon wave creeps).
His stun is not something you may ever use. Making it aoe may increase it's effectiveness. Also, slight boost to damage won't hurt: 90/170/240/300.
Elder Titan:
Q may be buffed 150/200/250/300.
R may use some reversion back to original.
Lycan:
R cooldown is too long for a creep killing gamemode. Something like: 40/35/30 may do just fine.
Magnus:
Q skill may use some damage buff: (110/215/320/425).
W Empower skill may have 10% of it's cleave back(20%/25%/30%/35%).
Sven:
W Greater cleave may have up to 45% cleave.
Spirit Breaker:
E Increase bash chance up to 30%.
Tidehunter:
Kraken Shield may be partially reverted: 12/20/28/48 (by the time he pick 4th level of his shield, waves are pretty harsh already).
Tiny:
May have 10% of his ulti cleave back(35%).
Tusk:
Walrus Kick(NOT Punch) may have it's cooldown reduced down to 3 secs, and damage boosted up to 550
Walrush Punch may have reduced cooldown down to 8/6/4. (This skill costs mana, and is not aoe, so I see no reason to leave it as underpowered as it is now). Even Battlefury won't save it too much.
Wraith King:
E May have 50% crit damage back(250/300/350/400%).
Arc Warden:
R ulti now can be reversed back to the original one(original illusion can no longer use consumables or moonshards). Cooldown might be reduced down to 38/28/18, and duration increased up to 22/24/26.
Bloodseeker:
R Rupture ulti can be applied in aoe.
Broodmother:
E skill may be remade to work just like Orb of Venom, but instead of 10 damage + slow, it would apply Broodmother's original In(kappa)citating Bite.
Medusa:
Her R may have slightly shorter cooldown: 60 seconds.
Morphling:
Allow Morphling's Replicate to have 100% damage dealt.
Ancient Apparition:
Decrease ulti cooldown down to 20/14/8 seconds. (I've seen like 2 AA players in Horde Mode, during 2 years of pub playing.)
Death Prophet:
W Damage reduction may be reduced down to: 20/25/30/35%.
Enchantress:
R Decrease manacost of her Impetus by half(25/30/35).
Puck:
Q Reduce cooldown down to 8.
W Reduce cooldown down to 8.
Zeus:
Has both, the new Horde(Wraith Night) ulti, and his original ulti. Buying Aghs does not grant him the new Nimbus skill.
Necrophos:
Dazzle:
Alchemist:
Clockwerk:
Dragon Knight:
Elder Titan:
Lycan:
Magnus:
Sven:
Spirit Breaker:
Tidehunter:
Tiny:
Tusk:
Wraith King:
Arc Warden:
Bloodseeker:
Broodmother:
Medusa:
Morphling:
Ancient Apparition:
Death Prophet:
Enchantress:
Puck:
Zeus: