There are some advantages to
my suggestion above of altering the BD player, over the idea of buying a DVD player that is easily hackable. One is that the alteration allows playback of not only other region DVDs, but other region BDs as well. Another advantage is that that BD player has better upconversion than one is likely to find in a cheap DVD player, so it would be better for playing DVDs as well. It also takes up less space, and simplifies one's setup, having fewer components that do all that one needs done. The disadvantages were mentioned in my original post.