Thanks for all the replies!
so far imo,
1) We will change our weight design from "DC60" into "ALF".
2) For side cutting, we have designed many different ways but TBH if we don't make prototype out, it is hard to tell. DC60 is not retro style casing, we want to create something more modern and cool. So we will stick to our side cutting design so far. hope you guys support us:)
3) For LED, maybe not for this time.
4) One more thing, we will engrave "DC60 for GeekHack, Designed by ALF" inside casing, maybe on the weight or somewhere:) Heard Massdrop bought GeekHack over, all the best for GeekHack as well as Massdrop.