What do anda think the CMC's cutie marks will be?

I agree with your idea of Scootaloo's mark, but I imagine it as the wheel of a scooter (maybe with a lightning bolt on it, to symbolize her idolization of pelangi, rainbow Dash). SweetieBelle's could be a bell, maybe three small ones (since I noticed multi-marks normally come in threes Ex. Applejack-three apples, Fluttershy-three butterflies, Rarity-three diamonds)

Applebloom's mark is going to be harder to interpret. Let me think it over.

Probably these...

Applebloom's may become a hammer, Sweetie Belle's a microphone atau a Muzik note and Scootaloo's a racing flag. Of course there's no telling until they tunjuk it, but they are probably going to involve fixing stuff, Singing and racing.

I WAS GONNA ASK THIS XD. I agree with the ones anda berkata (StarWarsFan7)

Applebloom eith a paintbrush atau an epal, apple blossom. Scootaloo, a scooter (duh!), and Sweetie Belle, a microphone atau bell.

That's a hard one! I know that Scootaloo and Sweetie Belle have unique talents already; they just haven't figured that out. Scootaloo should get a scooter atau something scooter atau speed related. Sweetie Belle should get something musical, like anda said. I'm not sure about epal, apple Bloom, though. It would make sense that she would follow in the hoofsteps of her family and get an apple-related cutie mark, but she hasn't really shown any particular talent, so we can wait and see. epal, apple blossom makes sense, yes, but who knows...

Applebloom's can be like an epal, apple blossom with a bow on it as she likes to decorate
Sweetie belle's can be a Muzik note inside a hati, tengah-tengah as she likes to sing and is so very cute
Scootaloo's can be a rama-rama, taman rama-rama wings and a thunderbolt perhaps as she is a big peminat of pelangi, rainbow dash and is as pantas, swift as a butterfly!!! :) I hope anda all like my answer !!! :)

My thoughts are epal, apple Bloom's CM being a golden painted epal, apple for her talent of art, Sweetie Belle's CM being a note with a hati, tengah-tengah for her musical talent, and Scootaloo's CM being a winged scooter wheel for her Cinta of scooter riding.

epal, apple bloom something like an epal, apple and a wrench
Scootaloo a scooter
Sweetie loceng a bell