There is a LOT of stuff that should be in the main core. I am of the opinion that if they are to unify each of the D&D factions then they must be represented in the core NOT just expansions.
4e had lots of expansions... I never read any of them cause I didn't like the core.
For this reason I think that even if they had to leave out levels 10-30 in exchange for adding content to "unify" different playing styles it would be worth it. Yep, level 1 - 10 sounds good to me if they fill it up with good content, and what an awesome money grab to get for people to pay for the next tier.
4e had lots of expansions... I never read any of them cause I didn't like the core.
For this reason I think that even if they had to leave out levels 10-30 in exchange for adding content to "unify" different playing styles it would be worth it. Yep, level 1 - 10 sounds good to me if they fill it up with good content, and what an awesome money grab to get for people to pay for the next tier.