I think that Doog and friends bought far to much CLAMs on 0.0009 so we can't expect price increase. Beside that we have big inflation and constant threat of new digger. On the other fronts Just-Dice seems can't attract new users. CLAM is simple not attractive to them any more. You can lose twice on dice game and decreasing CLAMs with no volume.
Two years should be enough for everyone who wanted to sign up for CLAMs to do so. After that date new CLAMs rewards for every BTC, DOGE, LTC address should be drastically reduced or abolished.
Digging IS the single most effective way to get more clamusers. And in fact I believe these guys will most probably check out justdice and even buy some more clams. Iam, for example, was buying a lot more clams after i found i could dig some coins. So digging is essential to the clam network, in my opinion. Of course potential digs are less the more time goes by. Maybe a bit advertising about the possibility to dig would help to get more digging and Iam pretty sure it will help the price going up too.
Honestly, i think without digging clam will die relatively fast. There simply is no new fresh energy flowing in anymore then. Where should it come from than from people being excited about the possibility to earn free money and check out clams? I mean checking out a new altcoin is pretty time consuming. When you have an reward to do so then wou might do it. If there is no reward at all then why should someone seeing clam from the outside have an interest into checking it out? Because of just-dice? Well, why think about exchanging your bitcoins into a potential risky altcoin when you simply can play on primedice?
No really... without digging clams will lose ALOT of his charme. And i think it will go down pretty fast then too.