I guess it really depends on what sort of bunker you're talking about. If it's a relatively mundane one with little lip, then yes it would give more options than the tree. If it was a genuinely penal bunker, the likes of which you find at TOC and indeed links courses more generally, then I think the tree is no more troublesome and probably quite a bit less.
One thing I will say is I played a course a couple of weeks ago which has some serious tree encroachment. There's one hole where the only way to avoid tree issues with your approach shot is to miss the fairway. I'm a long way from suggesting that all trees are good. I'm just trying to say that some trees are good, but I have read some suggestions that all trees are bad and that we should take a chainsaw to all of them. The right ones, like that one at the course I played a couple of weeks ago, I'll gladly do the cutting.
Keith - I'm going to be up there on Sunday. I'll take a look thanks.
Mikey, did we play this course together? If so, I'm sure it won't surprise you to hear that I thought the tree situation there was ridiculous.
What may surprise you, however, is that I actually think Bethpage has some examples of good tree use (and a few bad ones). The bigger issue for me on the Black is that we first need to define whether or not we're talking about the average player, or someone who has serious skills.
For example, #1 would be a far more interesting hole for the average player if the trees inside the dogleg were very penal bunkers instead. However, for the top players, bunkers there would just allow them to completely cut the corner with impunity.
On #2, I actually don't think the trees really come into play on anything but seriously off-line shots. I've played all sorts of fades onto that dogleg left fairway. I've also been in the rough on both sides with no tree issues.
#5 is similar to #1; the hole is one of the most difficult on the course for the average player, trees or no trees. While the approach might be slightly easier than #15, the drive is more demanding. As you already know, I'd be more forgiving of the trees on the left if the fairway was extended toward them, restoring a heroic option from down there.
On #7 I agree completely. And I'll add #12 and #13 as good uses of trees:
The tree on the left of #12 that forces you to take on the entire cross bunker, and not just cut inside of it, is very well placed.
#13 has two well-placed trees. The first tree, to the right of the landing zone, encourages you to drive to the left side of the fairway, thereby making your next shot more complicated (and getting you closer to the left bunkers). The fairway there is plenty wide to accommodate all that.
The second tree on #13, to the left of the cross bunkers that front the green, takes away the option to just pull out 3-wood for your second shot and try to blast it into the open space short/left of the green.
Another discussion about Bethpage could be that the course is already set-up so difficult for every day play (with the length, the thick rough, the deep bunkers, the ribbon fairways) that trees only exaggerate things and don't really add much.