We disagree then and my playing one job doesn't actually hurt me in the same way you seem to believe. I can join most runs as either a support or a DD, the only events I'm currently unable to perform as a DD in are Delve II and VD MPNMs, the former of which I can perform as a nuker and the latter of which I simply don't do as a result. In either case I have multiple ways to get Job Points, I just simply don't amass them nearly fast enough to be reasonable in my opinion. The fact I play only one job isn't so much a problem to me as it is an example of how even if they didn't limit the points to being locked to a single job that I still don't think it'd be reasonable.