I don't think much has changed. You can still get an M1, or a J1 via Bristow Academy/Hillsboro. Plenty of CFI jobs in the USA, if you have R22 time, unless you get hired by Bristow Academy (no guarantees though). Bristow Academy are still very very busy, so finishing in the timescales they quote might be an issue. Bristow Academy is still the only place that offers JAA CPL(H) training outside the EU.
Post J1, either marry a US person, start your own business (big investment), work illegally in the US, or go to Canada/South America/Africa/Oz/New Zealand (again, visa issues). Or (as a Brit), come back to Blighty spend a wad on the JAA IR and head up to Aberdeen, or spend a bit more on a JAA FI and carry on instructing for a pittance in the UK.
As I see it that's it.