Should I reroll?

[username17]

Class (but not racial) XP penalties will be lifted come Velious. However, I do not believe they are lifted Day 1 Velious. I want to say it's something like 6 months in.
That being said, if you learn to swarm kite bards are absolutely the fastest class to level to the low 50s. Even with the 40% xp pen. So if your goal is to be 50 ASAP then Bard is the class you want.

Once you're 50+ you can focus on groups or you can kite with a partner in places like burning wood.
Bards are needed in groups and the 40% penalty doesn't typically have any impact on getting invites because of your usefulness.

Should you reroll because of the 40% xp pen? Hell no. Bards are useful in groups at all levels and you can level super fast by swarm kiting.