where is the coin that can be tracked and regulated for tax concern's?
Note that, because Bitcoin and all AltCoins are decentralized and distributed, all node on the network end up with the whole transaction history in their local copy of the blockchain.
So most cryptocoins can get tracked any way. (Except laundry protocols like Zerocoin).
encrypted wallet that removes banks from the picture, and a digital alternative to a fiat controlled by pocket lining politicians {...} Let the community regulate the inflation, cost's associated with use, and distribution.
It's not possible to both *regulate* the inflation and at the same time remove the banks and politicians out of the picture.
If there's central control, you've just replaced the name of the regulator, you've juste renamed "banks and politicians" into "centralized regulation of cryptocoin".
If there's NO central control by design, not only have you kicked banks and politicians out, but you can't regulate anything on the coin, you just let it float around almost on its own autonomous life.
the only influence the community can have is simply indirect effect by its size (and regular economic phenomenons like demand/supply)
e.g.: currently bitcoin's price goes up, because there's a constant influx of new comer who buy to use them. They're are investing money into it (or if you prefer, the demand for bitcoin has gone up, while the supply follows the strict mathematical progression of its mining rules). Nobody takes decision. Only the massive increase of community has an indirect effect. The same happened recently with the other major crypto currencies (Litecoin) once it got the media spotlight. The same is happening currently with the minor cryptocoins as newcomer are currently hearing about them too (although I suspect that lots of the minor coin will end-up busting eventually).
If there was someone influencial on the coin, if the critical decision you mention (deciding inflation, cost, etc.) were taken by anyone instead of algorithmically/by supply/demande economic rules, that would be a single point of failure: that would be a entity or a group of person that could be targetted by government wanting to ban the cryptocurrencies, by shady groups wanting to manipulate the economics, etc. You would be back into the "bank and politician" scheme, only with a different name.