So there's discussion of how the game breaks down at Epic, and how there are very little epic tier support.
This lead to me being curious: when you start a game, do you really anticipate that the campaign will actually make it to epic level? Do you actually expect to play at that tier?
I never make it to Paragon, let alone Epic, so I don't think I'll ever get to play it. But do you?
My first 4e campaign was only intended to go to about 9th, and seems to have ended at 8th. Of my current 2 4e campaigns, it now looks like I can DM them consistently for a good few years & I'm hoping at least one of them will reach Epic. It's a daunting prospect though: ca 3 fortnightly sessions to level, with ca 22 sessions/year, = nearly 3 years to reach Epic! The biggest risk IME is that too many of the original players move away and the campaign loses impetus & peters out.
As I'll be running both campaigns fortnightly on alternate weeks there is the possbility of eventually running just one of them, but every week. Not every player can do weekly games though, and while there is group overlap I'd probably have too many players if I combined groups. Most likely I'll run both for a good while and it may be one has more 'legs' than the other and might go weekly once I see it can go the distance.