What do आप 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 इंद्रधनुष 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 या a संगीत note and Scootaloo's a racing flag. Of course there's no telling until they दिखाना it, but they are probably going to involve fixing stuff, गाना and racing.

I WAS GONNA ASK THIS XD. I agree with the ones आप कहा (StarWarsFan7)

Applebloom eith a paintbrush या an सेब blossom. Scootaloo, a scooter (duh!), and Sweetie Belle, a microphone या 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 या something scooter या speed related. Sweetie Belle should get something musical, like आप said. I'm not sure about सेब 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. सेब blossom makes sense, yes, but who knows...

Applebloom's can be like an सेब blossom with a bow on it as she likes to decorate
Sweetie belle's can be a संगीत note inside a दिल as she likes to sing and is so very cute
Scootaloo's can be a तितली wings and a thunderbolt perhaps as she is a big प्रशंसक of इंद्रधनुष dash and is as तत्पर, तेज, स्विफ्ट as a butterfly!!! :) I hope आप all like my answer !!! :)

My thoughts are सेब Bloom's CM being a golden painted सेब for her talent of art, Sweetie Belle's CM being a note with a दिल for her musical talent, and Scootaloo's CM being a winged scooter wheel for her प्यार of scooter riding.

सेब bloom something like an सेब and a wrench
Scootaloo a scooter
Sweetie घंटी, बेल a bell