I think it has a potential to improve standards. Here some have tried to come up with the solution by pooling of funds. A bank has funds/share in set of businesses that they know well, and then they give share to depositor in the savings account. It works similar to mutual fund, and fund manager in the bank tries to make a well balanced portfolio. But the concerns people have shown are that they don't know much about the business prospects, operations/practices, and management that their money is invested in. This is a valid concern, and trying resolving it would mean better sharing of knowledge and rating about revenue/risk models of the businesses, screening process, and transparency regarding the management and their operations/practices. This would be very beneficial for the industries across the board (but most importantly for banking and finance industry).
Another issue facing Islamic finance is the fiat inflation which was not there at the time of Prophet (pbuh) due to the use of gold and silver as currency. I'll try to find a chart, but in early 1900s when there was gold standard, I saw a chart that showed the value of money didn't dilute like it does today with fiat for 20 years. chart was about 20 years. So basically, it showed that money value moved up and down slightly, but on average even for 20 years it was almost same. So somebody lending 10 million would get back approx 10 million in real value even after 20 years. But with fiat lets say losing 2.5% each year on average for 20 years, means it would lose about 50% of the value.
Here is more accurate figure from
http://www.westegg.com/inflation/
10 million initial money in 1988. Returned in 2008 which makes it 20 years. After 20 years, its purchasing power comes down to $5,547,348.18. That is about 45% loss in 20 years and these figures are real. So person lending $10million in fiat will get back only $5.5million in real value if borrower only gives back $10 million back in fiat after 20 years.
These two are very important issues in modern finance and how Islamic finance will impact these two issues rarely comes up in discussions.
http://www.islamicboard.com/world-af...ml#post1259737