Her new government, which is expected to take office in early April, faces a raft of economic challenges, not least the continued financial clout of Myanmar's military, while needing to manage delicate relations with China, its biggest trading partner.
Critics of the former junta long argued that Myanmar's military elite grew wealthy off a cosy relationship with Beijing that granted the giant northern neighbour lucrative concessions with little trickle down benefit.
But Hantha Myint, the head of the NLD's economics committee, said voters were expecting tangible change.
"The people have very, very high hopes and then if we misbehave in some way... The people's expectations will be crushed," he told AFP during an interview at the party's headquarters in Yangon.
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While underlining that Suu Kyi would make the ultimate decision on policy he said a potential redesign of the multi-billion dollar Myitsone hydropower project in northern Kachin State was on the cards -- comments likely to reverberate in Beijing.
"If we refuse to build a dam at Myitsone we can build other dams upstream," he added.
Hantha Myint also said it was time for Myanmar Economic Holdings Limited (MEHL) -- a military conglomerate that runs business interests as diverse as construction, transport and brewing -- to "compete at a level playing field".
"The privileges given to MEHL by the previous government, we will not be able to give them those privileges," he said, adding however that other military financial ventures would remain outside of civilian control.
She led an inquiry into the Letpadaung copper mine in central Monywa -- a joint venture between MEHL and China's Wanbao -- following a violent police crackdown on protesters including monks in 2012.