Well i didnt mean it like its time for panic, just as advice for players at lower lvls which could be scared with situation after patch

The issue is being dealt with (for now). Runewaker have posted a statement on the forum and have decided to roll back the mana costs.

There is rarely any need for such knee jerk reactions, though of course there is never any harm in starting an alt.

I would say get on the forums and suggest how to improve the system, but even if you have a great idea you will be drowned out in all the swearing, shouting and idiocy.