I personally hate the volume display for trading. Maybe I just need to learn how to use it for trading...but I much prefer candle charts. I have no clue how to use a volume chart to trade with.
But I much appreciate the work you've done on Steem World...and I guess allowing us to trade via Steem World is important. Brings it closer to a full-service site for the Steem blockchain. Perhaps posting and comment replies might have been a better choice for expansion first...but I guess this might prove useful. I think it might have to be a bit more advanced or easy to use when compared to Steemit for it to be truly useful though, other than for the rare occasional use when you just happen to have the Steem World tab in the front.
Keep doing the good work!