Egwene is not "more like Rand pre-epiphany" and Nynaeve more like Rsnd post-epiphany. Egwene went through her own version of the epiphany in TGS, you simply appear to have missed that.

Egwene is already more like the role of Latra Posae post-Sealing, who stepped up as LTT's successor, ended divisions and kept what was left together against the Shadow (becoming the Shadar Nor) until the Breaking put an end to the efforts. She needs to be that leader even more, and much sooner than LPD. Rand is leaving her that place, she has to make the choice to take it, and not turn this into a debate over the issue of who should make the Champion's decisions. It's not contesting the wisdom of Rand's decision to break the seals right away that represents a threat to the Light, it's if Egwene falls into a "let's do nothing until we find a better way to handle this" logic that turned Latra into a force necessary for balance into one that simply blocked everything. Rand currently has no plan to seal the Bore, it may not be so wise to break the seals until he has one. He's rushing into things, pressured by the fact waiting too long the last time brought the Light to the breaking point, entrenched divisions, and left it very few options, all flawed. Rand and Egwene need to find the middleground. Rand is right the Light needs to take the initiative, Egwene is right to want to hear of his plans before she even considers he may be right to break the seals now. It won't sit well with Egwene and the rulers if Rand admits he still has no plan. Egwene just has to avoid making LPD's mistake of waiting for a "better plan" and stick to that while the world collapses, the Shadow almost wins and she still hesitated to go forward. Thankfully for the Light, Egwene as leader has very little of that aspect of Latra Posae, but she leads a force (the WT) who does have a lot of it ingrained in its culture, and who might advice Egwene to take the "better safe than sorry until we're just sorrry and there's no hope left for safety" direction. Forcing LTT to wait by blocking his path wasn't risk free and was very costly to the Light in the WOS (may well have cost them the AOL civilization), no more than his plan was risk free. Waiting too long is what needs to be avoided - at some point you just have to make a leap of faith, or you let the Shadow win by attrition.

The other thing Rand has also announced to a few lately is that he intends to focus on being the champion, meaning he can't combine LTT's political role as leader of the Light because he was the First Among the Servants, LTT's military role as the Light's General and come up with the best plan to seal the Bore. The military roles Rand no doubt intends to leave to Mat and others (this could even include rulers and their generals, like Elayne who rules the biggest national army and who is Green Ajah - and who might even soon recuperate Gareth Bryne to lead Andor's armies alonside Birgitte (strategist vs. field command) as his WT role will be superceded soon by the Captain-General of the Green Ajah and his student Gawyn is a natural leader - if not the wisest one in his Youngling days - who could possibly lead the warders and non-channelling forces of TV, alonside Galad and the WC). Siuan has been pushed aside politically, placing her with Bryne in the "military entourage" including Mat/Elayne entourage would be fun. Egwene will own the political role, she will have to let Nyaneve be her envoy with Rand. I greatly suspect she will pick Elayne to be her her liaison with Mat and the État-major and Adelorna near her as her political advisor/commander in chief. Elayne is a very strong Green, but she's pregnant and will be confined to behind the lines.

In his political role, Rand will leave to Egwene for the channelers (with Logain in an important role but likely as a kind of Amyrlin-in-the-field keeping the male-female AS working together, not at Egwene's side as political leader as he totally lacks experience, not to mention his utter lack of diplomatic finesse. He's a charismatic field leader, not a politician. His conflict with Rand and his decisions seems to naturally throw him on Egwene's side, and he's learned to work with AS now), and I would predict, it's Perrin who'll rise as the central figure among the non-channeling rulers. Egwene and Perrin work well together, and their personalities and styles balance each other very well. Perrin has always been the EF boy Egwene respects most, the one of the trio she has the least conflicts with (and vice versa). Mat and Elayne have learned to work together, Mat and Rand can. Mat and Egwene can't, Mat and Nynaeve can't. Elayne and Nynaeve can, Elayne and Egwene not so much, but Elayne and Perrin now works. Perrin and Rand can work together well even if Egwene+Perrin works better still, Egwene and Rand not so well. Egwene and Perrin is a winning match. Mat and Elayne is a winning match, Nynaeve and Rand is a winning match. All the signs point to Moiraine and Rand becoming a winning match, but Nynaeve and Moiraine is hardly one and they'll have work to do. Aviendha and Nynaeve don't work so well even if they don't clash too much either, Aviendha and Elayne, Aviendha and Egwene work. Aviendha and Rand work better than it used to. There are great pairings, and there's always one in each pair able to serve as "bridge" to the other pairs.

Rand - Egwene conflict: potential bridges: Aviendha, Perrin, Moiraine.

Egwene - Elayne conflict: potential bridges: Aviendha, Perrin, Nynaeve, Gawyn eventually

Egwene - Mat conflict: bridges would incl. Elayne, Perrin

Nynaeve - Moiraine conflict: Rand, Lan

Etc.