My biggest reflection was the old PT focused on a very specific subset of games with a strong strategy element (hence the T in PT). Often wargames, boardgame ports, and the occasional thoughtful puzzler. Games that the writers loved to play themselves (or at least thought they would love before playing and finding the games fall short of expectations) and wanted to highlight for others. So they had a strong cult following of gamers whose tastes highly overlapped with theirs [does that make us cultists?].
There are plenty of general interest game reviews sites out there, but I may or may not share the taste of the individual reviewer, or even (especially?) an aggregate of general interest reviews like on metacritic, so they become hit or miss, whereas I pretty much always came away with the same personal opinion of any game reviewed on PT classic.
So, my sense is the current PT is trying to cover a much wider range of games, with good writers, but ones who have a more diverse range of tastes. And they may be more interested in volume of reviews rather than finding the games they most enjoy themselves. Maybe that will be a good strategy for them and they will reach more readers and increase their ad revenue. But SP will be my first choice as long as the writers here keep writing about what they are passionate about, with that shared sense of style and taste, well-described by Spice above.
[TL;DR I guess it's a matter of specific shared tastes for me, both in game selection and writing style, rather than writing for the widest possible audience.]