The inflation is great many will be attentive to Diamond, I think 10$ end of the year is not unrealistic.
What kind of huge inflation are you talking about?
Here you can see that the total number of coins mined per day is an average of 1680 block and ~ 1400 DMD
https://chainz.cryptoid.info/dmd/#!overview

It's only ~ 1,5 bitcoins at the present price (note that not all 100% of coins go to sell on the market).
For comparison, 1800 bitcoins are mined every day.
So we have to date, the same inflation as bitcoin, even slightly less

Yes, there is a lot of bitcoin trading, the makrt is growing all the time. Good for diamond as new people will be attentive

The altcoinmarkt is not so unknown and many projects prove to be useful and very productive!
Diamond is strong and will take a step forward with the september update.