I think the thing worrying me and probably others is this...
Whatever the actual organisation behind you, Edward and Keith our impression is of a group of friendly, contactable people who actually understand the products. While we know people move on, get promoted and so on and that it might not be the same to three forever we have always had continuity of that.
If support were ever to be rolled into one, all brand, call centre type arrangement, "disappointed" wouldn't even start to cover my reaction. It would certainly remove my basis for choosing and recommending Zero88 or anything from the same stable with a different badge. Yes, your products are good - but so are others. In my mind your USP is the support.
Strand, and later Zero88 have been there throughout my lighting career. I've seen Strand go from the mighty driving force to a shadow of its former glory but Zero88 has carried on. Losing this name as well will be very sad. Not a rational argument I agree but without Zero88 as a concept what is there to be customer-loyal to?