More good news for DTV! Must agree that slowly but surely things are looking up, and its perhaps better this way.
The Tuesday's could be due to their football specials, they will generally be on a Tuesday (and Saturday) but of course the season finishes in May therefore possibly free's up an aircraft on Tuesdays.
Starting with 5 a week is probably more sensible anyway, Wednesday flights are free (+ taxes) so they're obviously expecting midweek demand to be much lower therefore to only operate on Wednesday to start with makes sense.