There's a huge difference between the UK and USA on cat vaccs, most USA cats are boosted 3 yearly, not annually, as it has been found there that the immunity is good for three years and the risk of skin cancers at the injection site has been more widely researched there.
My vet has some faith in the research that has been done by the Americans to support this, but he continues to advise annual boosters simply because that's the way its done over here. However, when one of mine developed a lesion at the injection site we decided to discontinue his injections at 12 years old. Thankfully this lesion was not cancerous, just a plaque, but it alerted me to the existence of such cancers.
You may wish to research this further.
My older (13 years+) cats don't get boosters, I have talked this through with my vet and he agrees that after a lifetime of annual boosters they would have compounded sufficient immunity to "see them out" without adding to the risk of developing these injection site tumours, but they still go for their annual MOT, so the bit about cats getting stressed at the vet is irrelevant to me in this instance.
However, for insurance purposes (and the occasional cattery stay for the younger ones) I have no choice but to have the others boosted annually.
I think your survey needs to have some of these issues included in the agree/disagree section, and also be tailored to an individual cat as Rosella said ... I have 9 cats and the answers would be different for each one depending upon their needs.