What other ramifications do you see happening?
There's more discussion in this thread about it. At the end of the day, the big unknown and possibly biggest ramification is aeronautical experience. Not everyone who shows up to be a VT IP makes it through the program, and in my experience, it's been guys with the absolute minimum flight time requirement to make aircraft commander coupled with less than average AC time.
The HAC time will probably be less of an issue, but could still be a factor. While the FITU isn't a program to weed out IPs and it goes out of its way to help, there's still some reliance on familiarity with the plane from primary while going through the NATOPS phase.
So why does this matter if you just increase the time to train the IUTs? Because now you're also shorting the squadrons of an IP for the expected duration because of an increased time to train.
At the end of the day, the Navy will make do, but personally, even as someone who was WOEFULLY behind my peers in career timing initially, I wanted to maximize my exposure to flying because I like being a pilot. Skipping the T-6 reduces that exposure.
