Darkcoin also had about 15-20BTC volume before going crazy. Price rising causes explosion in trade volume.
When price stays relatively calm and non-volatile, trade volume is very low, for every coin, also Bitcoin and Litecoin.

I bet if price goes to 1000 sat from 400 sat, you will have volume more than 100BTC.

That's how it is.

Merchant adoption is a logical next step, but not a imminent one. It will come later.

At the moment a multipool, transaction anonimizer and website/forum/marketing tools improvement are much more important.
Regarding the multipool - you should seek to make benefit from the coming Scrypt ASICS, that's a lot of power and that's a must.
Multipool <-> Scrypt ASICs. Be the first to wield that power.

Just my 2 satoshis.