On the bright side, for those who cherish the idea of a level 10 twink, agility still scales excessively for rogues and haste and crit have not been touched.

But a level 10 nerf isn’t the only thing Patch 2.4.3 brings us. In order to stop abuse of mechanisms that calculate depending on what your stats were at the final moment of a spell cast, Blizzard also puts an end to weapon switching. After the patch, when you equip an item, all spells currently casting will be cancelled.

What this comes down to is that you can, for example, no longer equip a healing staff while casting a heal to gain more healing just by having it equipped for a moment. The same goes for other spells, such as a Fireball that could be enhanced by quickly equipping a Pulsating Hydra Heart- now the Fireball will be cancelled upon doing so.
It is expected that most of all, healing classes will be nerfed by this, as switching staves around while healing is a common practice among those classes.

Enough about nerfs for now! There is some good news. Blizzard also brings us a completely unexpected change that will greatly affect battlefields for those who like to twink at 39; Mounts become available at 30!

Apprentice Riding and mounts will be available at level 30 and training will cost a mere 35 gold. This means that you will probably see players mounting up at the start of your next Arathi Basin/Warsong Gulch at 39. Flags will be captured sooner, maneuvering becomes much faster and fleeing players can be chased down on Horse/Elekk/Ram Mechanostrider-back from now on. It is expected that Druids and Shamen will lose much of their advantage as a flag carrier, because it will be easier for other classes to keep up with them.

Random other changes:

“Dispel effects will no longer attempt to remove effects that have 100% dispel resistance.”
This, among things, means that Frost Armor can no longer be dispelled.

“Alcohol cooldowns have been rolled into Drinks: All 10-second cooldowns have been removed and replaced with the 1-second Drink cooldown.”
If you insist on getting smashed when your BG begins, do a little dance.

“Ranks 1-5 of Revenge have damage ranges instead of fixed damage values (like ranks 6-8.)”
This makes Revenge capable of critting just a little harder.

“Clockwork Rocket Robots fight amongst themselves again...without attacking people in the arena. Well... they’ll blow up other Bots in the arena, but you know what we mean.”
Sorry DontNerfMyRocketBot: they just did. No more non-combat pets that help in combat.

“First Aid bandages can no longer be applied to a player with the Recently Bandaged debuff. An error message of, "Could not activate more than one bandage" will be displayed.”
No more double bandaging (by having someone bandage you exactly when you bandage yourself).

As you can see, Patch 2.4.3 brings good news and bad news to the Twink community. It all depends on whether or not you see your Rumsey Rum as half empty or half full.