Not really an easy discussion to have in a thread. There's relevant, and irrelevant in those links. If there's one relevant point in there that would tend to sway me, it's the implication that corruptions are more likely in an environment where a single database is used. I split my databases, but I don't have multiple copies of the FE. I haven't found it to be necessary (in the ten or so years I've been working with them), although my direct experience is hardly a survey.
Having said that, it was never my position that multiple FEs is a bad idea, or that anyone already with that setup should consider changing their approach.