The [4E] math works better than any previous edition.
Agreed. That doesn't mean I have to like it

The 'flatter math' of 5E interests me a great deal. I want to avoid the 'take every possible upgrade to your attack rating, just to stay in line with where you started' thing that 4E does (see every 'the math is broken' thread for details).
[Alternatives to AEDU] Like what, Weekly?
Like vancian, and no dailies at all (old fighter) etc etc.
Though now that you mention it, weekly isn't so far away from the system I'm piecing together at the back of my mind. I was working on the principle that you gain less benefit from each rest in a consecutive dungeon crawl. i.e. regain full HP the first night, only regain 75% hp the second... with an equivalent slow down applying to spell slots and other refreshable abilities. The secondary element of my system being that the longer you stayed 'active' the more downtime you'd before the next adventure.
If I listed the other 25 things I'd change about 4E, I'd be going way off topic, so I'll leave that for other threads.
BedRockGames said:
But I think the edition treadmill is proving to be a failed model. At least the way wotc has handled edition transitions. They cant risk splitting the fanbase with each release of a new edition.
This from the person who was suggesting that WotC should deliberately split their product line into 3 parts... But hey, it has long been established that I have no business sense, so I'll leave that point alone. Suffice to say that these two statement struck me as contradictory.
Back on topic though;
I do
play 4E, so what are the things I'd carry forward into 5?
* Simple monster stat blocks
* Consistent dice/DC mechanics throughout
* Simple understandable combat mechanics and conditions (no 3E grapple!)
* Few(er) causes of opportunity attacks
* Monster roles
* Multiple monster examples within each species (though I think I'd put the focus of MM1 on more monster species rather than on variety within a species)
* Not spending minutes/hours picking your skill ranks each level
* The ability to have highly tactical combat (not something I'd use in general though)
* An evening out of class balance (not necessarily to 4E's extreme). As mentioned elsewhere, my first (and possibly only?) major step would be to stretch the 1-9th level spells across 30 class levels rather than 20.
* The greater mechanical distinction between races
And to answer the question more bluntly:
Q) What would it take for me as a 4E player to consider 5E?
A) Removal of 'powers'
and
A) Whatever is required to convince my current DM to make the switch.
I can't resist commenting on one thing that I would NOT carry forward:
* Round by round effects. Especially the +1 to X effects that only last for a round. There are way too many changing conditions to keep track of. I'm convinced that this is a major factor in how long our combats take.