"The Talk" is something with possibilities, but which I don't think should be pursued for a very, very long time.
Marvel has a problem. They don't seem to understand Lorna should be treated as a character in her own right, instead of as a trophy for two men to fight over and try to win. It's how we ended up with this as a cover for X-Men Blue.
Marvel needs to understand and treat Lorna much, much better before pursuing something like "The Talk" - or anything involving her history with Havok, really. Otherwise the potential of "The Talk" will be forever marred by Marvel handling it poorly.
Right now, Lorna and Magneto doing things together is a good thing. They're exploring new ground. The kinks are being worked out as they're written, writers figure out what works and what doesn't, and fans give praise or criticism over certain directions. That changes if Marvel takes things in a bad direction; and I strongly believe "The Talk" if done today (vs a long time from now, when things are better established) would lead to a bad direction.
And yes, usage of covers does matter. It's what people see, and people form impressions from them. It's why there was such a massive uproar over the Batgirl cover involving Joker and Killing Joke a few years ago. Marvel knows this. Poor depiction of relationship dynamics on a cover (even if the quality of the art itself is good) has a negative impact, as does Marvel taking a good cover and using it as a bait-and-switch to mask how the content inside is all about promoting Havok at Lorna's expense.