Welp, having read those rumours I've already decided to start saving up 180 euros for this new trilogy. The twin facts that the core theme of the first two (which are the only plausible rumours, imo) is exploration, and that Shepard and Co are gone is all I need to know.
If it does turn out to be post-original-trilogy then I hope it's a long, long time afterwards. As in, thousands of years if necessary. Glad the Turians and Asari are returning.
To chime in on the Asari debate: I'm torn because while I recognise the Asari as blatant nerd pandering, I really like Liara and I really like the idea of a monogendered sentient race. The problem is where Bioware went with it. As mentioned, they have a lot of the 'wise old space elves' trope to them, they are far too human compared to the other races, there isn't enough diversity in the way they look (explained by genetics/story, but still), the 'maiden-mother-matriarch' thing is a kind of a gross simplification of a woman's life journey to me, and their sexual reproduction / mind melding shit is ridiculously stupid.
At the same time, they are pretty damn sexy, and I'm not the kind of person who's completely averse to being pandered to. I'm weak like that. On that note (appealing to my male gaze) Bioware certainly hit the mark, and it didn't hurt my enjoyment of the game one bit.
As for Liara, she was exactly the sort of hero I typically like: Somewhat reluctant, clever and circumspect, with the courage to overcome her fears rather than being fearless. I could have done without the romance, but since it was there I found it harmless and sweet enough. And the Shadow Broker DLC was great. So Liara alone colours my take on the Asari. She'll be gone, but I suppose I'm glad that the rest of them are back.