I love Gnomes and I always have.
Back when I started DnD my big thing on Gnomes was that they were the one uniquely DnD thing you could play. They weren't Tolkien and they weren't precisely Dragonlance. They were just there.
And I think they are spun all wrong given their common habits and proclivities. IMO and IMC Gnomes are, at heart, the scariest PC race.
-They're good at making chemical weapons.
-They're harder to hit and better at hitting than humans.
-They're as tough as dwarves.
-They get good intel from animals. Where isn't there a rabbit?
-They get a little bit of magic ability which is essentially perfect for luring people into traps.
-They all live in camoflauged fortified encampments and have a nebulous national identity that is perfect for conspiracy and guerrilla warfare.
-Instead of sending an evil subrace into the underdark they sent down some lawful good gem diggers and got Deep Gnomes.
-They can smell you before you see them.
Gnomes are the guys who save you and give you shelter when your way out alone in the woods or caverns and the elven glades and dwarven halls are miles and days away.
But the big thing is that illusion is a lot scarier in 3ed and it was never as scary as it should have been in 2e. Nothing is as arcane, save perhaps necromancy, as illusion.
If the big purple silent void that appears to be swallowing up the landscape appears in front of you and you fail the saving throw you might know that it can't be, but you also know its there and its coming for you.
At least charm feels kind of natural.
IMC, Gnomes were the only race to survive all the major Fall of Rome castrophes relatively intact and they became the kingdom and purveyors of secret knowledge. They were the kingdoms of Byzantium and Prester John to the Elves and Dwarves Italy and Germany.
And it wasn't simply that they knew more, but that they had a lot more capability and didn't flaunt it.
Most of the time they were subtle by being small and magical, but when they weren't they were subtle by being grander and more bizarre than anyone could believe.
Know I like a good trickster, but I prefer a bad ass trickster.