I completely agree that any such campaign for firmware revisions needs to be civil and non-threatening. If you read the letter I sent to Tascam above, you'll see that it is very matter-of-fact and is not making any sort of demands; merely pointing out issues and suggesting fixes. What other people choose to do is their business.
Not exactly true. What other people choose to do can impact your business. See: driving off Tom rather than working with him.
So, when someone starts talking about sending certified letters, I think they are crossing into the antagonistic territory and it is wise to voice an opinion that that is not the appropriate approach. Yes, they can do what they want. But to think their actions won't cause Tascam to lump all of the requests in with it (ie, read my "you guys" label), then you are not being realistic.
volt, I think your approach has been level. I also think Tascam's response to the SD card glitch issue was weak, but the over the top response from a segment of TS'ers, while within their right, did not achieve anything and in fact cut off the only direct access you had to the Tascam service team. If folks are going to go down that path again and expect this device to be everything they ever wanted in a 4 channel recorder, I think that is ill-advised.
A coordinated campaign? Absolutely. It may get you heard at the right time in a development cycle. Sending certified letters to see how long it takes them to respond? Unrealistic and confrontational, IMO.