DD did 2 years of level 7 without competing her giants. Scored 9+ and placed in top 5 at state on bars both seasons. Beat many many kids with giants. However, she had free hips to over 60 degrees and very solid controlled cast handstands.
More importantly, she was fast tracked to Level 7 at age 9 during the first year of new 6 because her coach at the time didn't know what 6 would be like, and DD had never tried a giant even on strap bar until she was Level 7. Hindsight being what it is, I wish she'd done a year at L6, then gone to level 7. Her giants have been touch and go for several years now, and when she changed gyms it was one of the things that really messed with her confidence as the bars coach there would not let her train L8 bars until she was doing giants well and consistently on her own (which I understand, but being as she had her free hip to hand stand and almost her pirouette and was working release moves, plus scored better than all the other L7s on bars, and was a pubertal 11 year old, she DID NOT...and that along with other training differences really messed with her confidence).
We have a girl who competed L8 last year without giants - but her routine was much more difficult than the standard L8 routine to make up for that and both she and my DD are back to trying to get their giants off pit bar and consistently solid this summer. DD HC has said she can do L8 without them too, but the routine without is probably more out of her reach than the darn giants (she's getting around some on her own - and her form is good - she is tap/wrist flick challenged....) after she took 3 months off and then dilly dallied for another 4...
So, if I had any say, I'd vote for NOT doing level 7 without giants unless there is a good reason (older kid almost done with gym and already did L6 a couple of years...stuff like that), because even for my DD and the other team girl in similar position, both of whom are strong bars workers and have excellent natural form as gymnasts, its been a big hurdle to overcome as they tried to continue into higher level optionals...