Dosflash recently started being updated again so yeah it probably would (it was not like it did much in the way of checks beforehand).
Being on 1.6NS changes things a bit. First off the very easy ride 360 owners were enjoying has become slightly more bumpy but still very manageable.
You have to update to play new games and no version of the 1.6 NS line has been made for the new DVD firmwares and the 360 expects this new firmware with current dashboards.
Games from waves 12 and 13 carry (of which we have seen several-
http://abgx360.net/verified.php?f=wave&q=12 and
http://abgx360.net/verified.php?f=wave&q=13 with most future games expected to also use it if they are not using XDG3. The scene release of deus ex has wave 11 so others reading no need to worry there) the updates that will reflash the DVD drive with the new firmware* so it is the new stock or LT1.9?/2.0 or nothing at all once you are there.
Being one of the LT firmwares splitvid is required, I had hoped there would be a version without it (it seemed to be tied to the live detection thing rather than a straight up necessity) but hey- all games since LT should have used it and it has been around for a very long time so earlier games might well have it as well. It is a very simple fix (ABGX360 can add it in without so much as downloading anything) but for obvious reasons you have to reburn games that lack it should you still wish to play them.
It also means you should be able to play the AP2.5 games although those do require you to keep on top of things even if you are not using live- MS seems to be changing things with every update and the next one is due in just over a month (there was a leaked video doing the rounds).
*just to make it complete updating through these new dashes requires some fiddling that earlier updates did not. First you have to drop back to a stock firmware for the drive (if your drive had multiple original firmwares of the same base type- the 7 series liteon for example it does not matter what one of those you use), allow it to update (if you are offline I would use a USB drive with the update on) to the new stock firmware as well as dashboard, make sure it boots up and then flash it with a new hacked firmware.