Preordering is okay for games that deserve to be supported like bloodborne, bloodborne for example has not any digitally preorder bonus, in the nightmare edition there is only a coupen to download a soundtrack thats it.

I really got their feel of testing and showing games from the Tree House thing at E3 last year. That was such a good idea and seemed really great for them to do that. It felt honest and quite confident for them to show the game real time rather than just have built trailers set to show the best parts of a game. I hope the Tree House thing stays, and other dev teams could learn something from that.

When it is publosher with a good track-record in completing games so they need massive day one patches. Nintendo-games are ok to pre-order for instance

I guess when it comes with a pre order bonus you really want, or if there is a genuine worry that it might run out of stock on day of release.

One of the good things however is that we don't need to inport games. The stores buy games from every region. I also buy the Comppete Edition if it's a game I never had interest in trying, like Bioshock Infinite. That was a very fun game.

Its OK to preorder whenever you want. A few whiny "gamers" claiming it hurts he industry without evidence shouldn't stop you

I like many here use pre orders with a fair degree of discrimination , take me I will pre order Persona 5 because I love the series and their track record make the odds that I will love this game pretty high , same thing with any thing from Naughty dog .
You can't completely eliminate getting a bad game , people have been burnt the same way buying day one you just have to be cautious towards what you do or don't pre order.