I haven't been in Hydlaa for a long time now, but still I would like to say something.
Making mining dangerous:
If you look at it realistically, in which world would there be a mine with important resources without protection? I already think that it is kind of funny that the mine ist just in the grass, and not going even a little bit into the mountain, and if you actually find a cave, there are no ressources to be found anywhere. A normal economy would need iron etc. because also NPCs would need resources to produce their weapons. And so they would build a mine for better production, and have guards for protection. Ok, these guards might need to be human players, which means you would need to pay them. But what happened when there were the new gold mines on bd2, with Ulbernauts nearby: People mined, ran away, got ulbers stuck in a wall, kept on mining, got ulbers away from the mine. That does effectively NOT work.
Changing platinum price:
If mining really stays the only good way to get money, then raise it, because from my experience as a warrior: I was always short on money, I had to go mining for gold to get my really expensive training money, also because max levels in skills kept increasing.
But generally I think there needs to be a good alternative besides crafting and mining to get good money.
Reduce cost of training:
I think it is kind of rediculous how far you can train. How far do you want to go? skill 300 in sword? 250 in magic? stats on 500?
That would be a waste of time and money?
I think skills should go up to a 100 and not higher. maybe as a percent thing.
And then training ought to be easy till 20, and then really expensive at the end, because it is hard to find someone who would actually be able to teach you when you are that good. And then what do you do with pp? Those are not a problem because you can get them so fast...shouldn't that be a little harder and then you need just a few for a level?
I mean:
Train 1 level in sword to level 20. Pay once 10 000 tria (atm that is only 10 platinum ores....maybe 15 min of mining...

) and 5 progression points. and then give people a level (unseen, because I like it without a level) and at lower level it takes less ep to get pp, and then harder.
But back to economy:
I do not really believe there can be anything fixed till a wipe with a deffinit system comes out...when you know how high skills are going and how long it should take you to train.
I would say it should take you a year to totally max out for being a warrior, mage or any other job, not meaning that you would have bad results after 2 months or half a year.
So for the moment I would say make it kind of easy to get money..let people explore possibilities...