I don't have an issue, I think he's asking a great question and getting pathetic answers
manufacturers, whilst a bunch of incompetent retarded halfwits wrecking the world based mainly on the idiotic instruction of the accountants pulling their chain, at present still appear to find the best compromise on friction material
thus the general behaviour, feel and longevity of the clutch and brakes coming from the manufacturer is seldom improved
sadly these days many competent aftermarket components are in reality some fake trash from China and whilst the good pattern ones should do the job, you're more likely be sold and thus fit a fake, leading to a number of issues....
a clutch on a car or a Boxer BM is a pain in the arse to fit. the OEM will fit, will work well and if used appropriately last for 85k miles, whilst a fake will last 15 minutes. If you can really buy a genuine pattern part close to OEM quality you will do OK and it will feel OK but in general it will perform slightly worse in all aspects you care to measure
When it comes to brakes, the risks of Chinese trash is much higher but luckily the ease to go back and fit OEM is far easier (if the bike is still upright)
When we are talking friction material you can easily make it grip more, but the compromise will likely be to the detriment of rideability / ease of use. On brakes we get to ones that will respond differently in wet weather and temperature, often being a bit nasty on cold disks and improving at they get hotter
In general you seldom go wrong with GENUINE OEM for friction material, and for a clutch I'd always do OEM on a car. For brakes I often want better than OEM coz I push it far harder than the average Joe, but don't expect a performance improvement from EBC. In my 35 years experience its 20% worse than OEM
I can't give a heads up on ceramic, never tried, but if it worked "really well" they'd probably fit as std on a clutch. What you hear on the brakes is its expensive and works great if you're an animal operating it under similar conditions (lap after lap). However noise can be an issue, if not abused enough they can play up and the range of ideal operating conditions is far more limited than you get with ordinary friction materials.