You might remember it being a fairly big deal when a modified version of bSNES was released that allowed this, but now it's possible to get the same enhancement on Game Boy Advance titles.
I've recorded a simple demonstration of it using the 8x scale. You can see well it manages to smooth things out!
On the preservation side of things, the update also adds support for the incredibly obscure BattleChip Gate accessory.
Marking the first time it's ever been emulated.