The new one will be called simply Runequest.>>49654897
Runequest really pionneered the idea of classless characters at the time. You're not just a berserker or a mage, you're first and foremost a guy with certain skills and traits. It handles progression in a way that was revolutionary at the time by making it easier to progress in skills (including combat) that you actually use in play. Each time you fail at something, like finding tracks or haggling, you would put a mark next to the skill. Comes experience points you could improve those areas and get better at them. So the more you use a skill, the more likely you are to fail at it and therefore the more likely you will be able to progress. So anyone could try their hands at pick pocketing and get better and better at it even if you're a "barbarian" type. Furthermore there are possibilities to find trainers in the world and pay them with your hard earned cash so you could improve in the skill that was chosen.
In D&D the class structure will constrain you into your role and there are few things if any that will allow you to branch out of the mold. If you're a half-orc barbarian and the game shifts to an urban political game, you're shit out of luck (and should have a strong talk with your DM holy shit). In Runequest, you could take etiquette classes.
I hope that answers your question.>>49655167
No Mythic Rome indeed. It has yet to surface on my radar.
No Mythic Greece either but that's because it hasn't been released yet, probably next year.
I do have "Rome - Life and Death of the Republic" for BRP if you're interested. (Basic Roleplaying System is a universal take on Runequest rules by Chaosium)