Good idea with taking it apart from the fitting as it is quiet heavy.
I'll definitely be trying to sort the reflector. I'm going to have a look if I can find a better housing unit for it and just DIYing the LEDs and driver to it.
Thanks again mate. I'll leave the post here for a bit and see what people say before I make another thread
I wouldn't go so far as a new housing. You're not going to be spraying water on it so you don't need it to be waterproof or anything like that so it can be "open".
Rip it apart so you have the driver and led/reflector assembly.
Extend the cables so your driver is remote from the fitting, that way the driver can get rid of it's own heat easier and that's less weight to hang. You're talking about using your loft so there's no issue with hanging some sort of basket/frame to hold the driver, just screw it onto whatever roof truss is nearest.
Modify the reflector, then the fun bit is finding something to use as a heatsink. The reflector will be metal so that is one nice open surface to help with heat, but you'll need more than that. Obviously the LED's can be unscrewed from the reflector so there should be no issue in taking them off so you can bolt the likes of two or three of these onto the reflector, as an example as I can't tell the physical sizes so more or fewer may be needed, from
Digikey, and you could even have a regular fan blowing over them just to help move the heat. Keeping the reflector also gives you something to bolt hooks/eyes onto for hanging the bugger.
Or you could go for actively cooled heatsinks, ones with their own fans, instead
Either way, no housing of any kind should be necessary, the more everything is exposed, the better the cooling from the airflow you will have in your setup anyway.
Note:- This is all hypothetical due to me not having my grubby paws on one of these fittings. I am not responsible for anything that goes wrong but, as I see it from the pics, as long as a way can be found to manage the heat, like what I've said, there shouldn't be an issue.