Don't get me wrong, if someone doesn't own any Borknagar, then by all means, they should, and this would be a good place to start.
But as someone who owns 4 Borknagar albums ('The Olden Domain' through 'Empiricism'), 'Universal' just didn't seem like it would fill any holes in my collection. All it would do is dilute my listening time: when I felt a "modern, clean, Borknagar mood" coming on, I'd either pull out 'Empiricism' or 'Universal', and the other one would gather dust. If I add up all my spins of Borknagar albums over the last 5 years, it only comes to 25 listens, so it's not like I've worn 'em out and need something new.
But, I only listened to 'Universal' once, and not in direct comparison to 'Empiricism'. So maybe the differences are greater than I noticed? Are there songs on 'Universal' that would have seemed out-of-place had they appeared on 'Empiricism' or 'Epic'?
Neil