I'm not sure whether I like it more or not. Regent would draw me into a specific archetype a bit harder as a build around than Forager which is more generically useful.
Forager just seems a tad too fragile to combat and red spells from what I've experienced. It ideally wants you to exile the best spells in your 'yard so you get the best return when it attacks, but this leaves you open to a bigger removal blowout and can restrict other recursion like
mission briefing.
Regent can enter as a (cheaper)
Tombstalker relatively easily in a wide variety of non-specific decks, but still offers that extra payoff for being in a spells deck with Retrace, Flashback, etc. In fact, there is some nice tension with GY-recurrable spells since you can either lose the card to get a bigger up-front body, or sacrifice the ETB size for more spells to use and grow it later. Even one instant/sorcery is a very respectable 4/4 flier that can grow later. Card is stronk.
Which brings up one potential issue, which is that it can easily obsolete the actual
Tombstalker in some deck builds, so that might be a cube design consideration tipping in favor of Forager.