Archer will get a little darker, a bit more driven in his mission to stop the Xindi. "The idea of being the peaceful 'We-come-in-friendship' [guy], ... that guy is gone," Bakula said.
Ironic, because under the circumstances, Archer would be fully justified in taking the talk-first, shoot-later approach to the Xindi. He doesn't know whether FG is trying to manipulate him into starting a war - he
can't know. Is he really going to just take FG's word for it?
Maybe this is some kind of ham-handed attempt to de-wimp Archer. Sure, Archer needs to be driven, but he could be driven to try to determine the truth about the Xindi.
We already have the requsite shoot-firsters in the MACOs, Trip and prolly Reed. If Archer is gonna be a shoot-firster, too, we have a whole passel of characters who essentially have the
same function in the plot. Good characters all have distinct functions. Otherwise, why bother having them around at all?
T'Pol (Jolene Blalock) will no longer be under the control of the Vulcan High Command and will begin to explore emotions and humanity.
They should just change her name to Seven and have done with it.

Without the whole "issue" with the Vulcans - badly done as it was - T'Pol will lose her reason for even being on the series (other than for T&A). So her episodes will be just stupid T&A episodes where her boring exploration of her emotions will be a thinly-veiled excuse for sex.
Any possibility of her becoming a potentially interesting character is now gone. I wonder how long it will be before the recurring "T'Pol explores her emotions - again!" episodes will be a watchword for "I guess we're watching Smallville instead this week."
Trip (Connor Trinneer) will grieve for his sister and struggle to balance a need for revenge with his sense of duty to Starfleet. Seeking help from T'Pol, he may find himself more intimately involved with her than ever before.
And they call DS9 a soap opera.
Not that they'd necessarily be more interesting, but they'd start way out ahead of the Trek curve simply by having two such engaging, talented actors with chemistry involved this way. It would just about be a Trek first.
At the risk of agreeing with
Dennis, I gotta agree. Trek has a terrible track record with "romance." DS9 did many things very well, but romance was not one of them. It was very Trek in that way.
The only sci-fi series that has ever depicted an interesting, hella-sexy, chemistry-laden romantic relationship is Farscape. Sci-fi series just seem to have terrible problems with this particular form of writing.
However, I am a tad skeptical that the Beebs will break Trek's romance losing streak, especially since they seem unaware that T'Pol could explore any emotion other than "lust." Does that even count as an emotion? I'm envisioning a Chak/Seven redux, or should I say, "reflux."

In both cases, you have one decent actor (Ryan, Trinnear) and one sub-par one (Beltran, Blalock), and no particular reason to throw them together other than the fact that they are the designated hunk and hunkette.