Cruise industry set for a massive shake up

I've said it before and I'll say it again, I'm not a big fan of sea days. Cruising for me is all about seeing the different ports of call on my itinerary, not relaxing onboard staring out at the ocean.
Don't get me wrong, the occasional day at sea in between ports is nice to break things up but four or five days in a row? No thanks!
The problem is that some new fuel regulations that will come into play in 2015 may well mean a massive increase in sea days.