The crafting system allows the learning of all skills on the basic level. Restrictions are applied at higher skill levels.

Will there be some special collectable items?
Yes. You'll be able for example to collect a Rune atlas, a monster compendium that allows you to capture monsters that will be summonable. You'll also be able to collect titles that mark player achievements, that grant additional skills and attribute enhancements.

What about the combat-system in RoM?

We'll have a unique playstyle for each classe of the game. The gameplay will suit your classe and you'll be able to deal different types of damages, from chainable spell effects using elemental power to physical or piercing damages. You'll be able to loot bonus orbs that are randomly dropped by monsters. You'll gain some benefits, as effects during the combat.
You'll also earn some technique points that will be accumulated with each kill and lvl-up. You'll be able to use them to improve your character skills or spells.

What about the itemisation-system?

There will be hundreds of traits combined on item drop. We'll have a nine upgrade ranks system to level-up your equipment with different leveling paths. You'll also have some runes to customize your items. Of course, there will be dozens of class-specific armors.

How are we going to move in the game?

In  Runes of Magic Gold you'll be able to move your character with the WASD keys of the keyboard. You'll also be able to move using the point and click way. Notice too that all the keys will be configurable, that means that you'll be able to move as you want and pushing the keys you want.

As update, I can confirm that the player will be able to jump.

Will there be mounts in the game?

Yes, there will. But no information is yet known on how to get one and if we'll have to pay for them or not.
They'll likely be horses, but there will be some special mounts that only the bravest adventurers will be able to attain.

You can watch an image of a mount here, that looks like its wow-cousin.

Will there be some GMs in the game? How will they look?

Yes there will, and they will be in-game with us. But we don't know yet how they'll look.

Will RoM be another Asia-Grinder like?

Hopefully not. It seems that there are enough quests (about 600 at the release) to grind without monster-bashing sequences. For more information about the quest-system, read the PvE section.