The main problem with the Child collection is that the cost involved in producing a printed set would be prohibitive, given the potential market.  The DT has many of the song texts, though by no means most of them, and in all too many cases they have been transcribed inaccurately and without proper attribution.  It's also worth remembering that the bulk of the English and Scottish Popular Ballads is composed, not of ballad texts, but of information about them, very little of which is available here.  Without the associated information, the song texts are of limited value; a publication of the entire corpus would be important (and a huge job; I've looked into it), but the whole thing needs to be done, not just a piecemeal compromise.

Malcolm