i'm a fan of the current approach considering BTS to be equity in the business. it gives the 'currency' much more value as representing a token in a network with useful functionality. sure, money transfer networks have value, but that's what BTC and LTC do well...we should keep focusing on our niche and not simply try to replicate things already done well by others.

Startspirit, I like your idea of taking a loan to fund development by vesting a lump sum of bts and selling it cheaper than market-price (or some other enticing benefit, maybe sharedrops of some kind?) to investors willing to take the risk on the medium term success of bts.
Couldn't this be done with a worker proposal?
The shareholders can allocate reserve-pool funds to a vesting account and delegates can publicly vet and announce fiat banking relationships.
I really like the product-freeze mentioned by Cryptonomex.
We're wait ahead in development, now we need to get our products in front of our target audience.
An existing system that can get the job done ~80% efficiently will still advance bts faster than developing a 95% efficient system that takes months in R&D. (Numbers for illustration only.)
We may only need dev-loans for the first year or so, it may not be worth developing a whole new system.
If after a year it turns out that we would benefit from a superior loan system, then bts will be profitable enough to comfortably pay for the R&D due to the dev-loans secured with the tools we currently have.
In which case there would be no point in investing scarce funding in developing a new system right now.
Bitcoin seems to be doing ok as a currency, but neither bts or btc will ever behave as an ideal currency until mass adoption.
If business-BitShares gain mass adoption then they should be fairly stable anyway. If at that point people choose to use bts as a currency then great.
But I don't see the need to jeopardize BitShares' business niche to muck about with trying to make our own brand of currency and expect it to behave as such from the get-go.
It will be highly illiquid and untrusted for ages - so what's the point?
Bitcoin has a 5 year headstart, and no amount of investment can buy the time needed for customers to get comfortable with something brand new and unproven.