Okay, I just played through most chapters using the debug room and saw the ending. I *think* we can make CE fits with the new CT DS canon if we change a few details. I'm not sure if this is the kind of changes that qualifies as "major" or not, but I figured the earlier we discuss this, the easier we can find a solution (or agree to not change the game).
What I'm assuming about CT DS:
- The information given in the Dimensional Vortices is canon: Dalton is responsible for the Fall of Guardia and Guile is an alternate Magus (this last point doesn't really concern CE I guess).
- ...but Crono's party don't remember these events: either Schala erased their memories when she teleported them out, or they are past versions of Crono's party so they get Time-Bastardized at some point (see some of the CT DS discussion topics), or they never actually traveled to the Vortices. We really don't have to explain this point in CE.
- As far as CE is concerned: at the beginning of the game Schala hasn't merged with Lavos yet. When she does (in Chapter 17), we'll talk about the Dream Devourer in dialogues rather than Time Devourer.
So, considering these points, the change I propose for CE would be to...
add 3 years to each Entity era. 64999995 BC, 11995 BC, etc., and most importantly, 1005 AD. This probably shouldn't change much as far as dialogues are concerned.
The important result however is that this makes Chapter 15 (The Glare of Midnight) the
actual Fall of Guardia. The kingdom is attacked, King Guardia dies...I think Zeality even called this part a "mini-Fall of Guardia" at one point. Dialogues should be easily adaptable, so the only major thing we have to change is that the party fails to get the Masamune back in Chapter 14, and we have to add both Kasmir and Dalton in the Chapter 15 attack on Guardia. Porre, Kasmir, Dalton, King Zeal...that's a "Dream Team" of villains; Guardia's defeat is easy to understand this way. To fit with Chrono Cross canon, the Masamune has to disappear here (lost sight of in the confusion of the battles or something). Kasmir and Dalton escape with King Zeal so that Chapter 16 onwards, including the ending, remain the same.
With this, we comply with CT DS and depict the Fall of Guardia onscreen in a highly dramatic way. So...thoughts? Is there any hole in this plot arrangement? Is it feasible in time (I guess that may depend on me too if I code this part)?