Steve
Trade bodies have an important part to play and can be very influential, but they are less effective when each scheme has its own unique concerns and there isn’t a single ‘industry’ position.
Similarly, the Government won’t necessarily appreciate how what it is proposing impacts each individual scheme. If you find you would be challenged by a proposed change, that particular impact may not yet have been considered, so it really could shape the outcome if you alert the Government to this viewpoint.
But of course, the closer to the regulations being finalised, the less likely you can encourage meaningful changes. These things are often years in the making, so getting in early and often really is the best approach to being heard.