I realise that the lengths of ArbCom terms are set by Jimbo, and whilst I recognise his authority in such matters, I would like to postulate that the length of the terms is perhaps excessive.
I say this not as a losing candidate in the recent election but merely as a concerned Wikipedian. Two and three years is a looong time, especially on the internet. I think that (especially given the -50% returns of 6 "winners" in the recent elections) terms so long only perpetuate notions that Wikipedia is somehow run by a cabal.
I myself would prefer the terms to be staggered at six months, twelve months, and eighteen months. However, I realise some people would be concerned about going through the nasty election process every six months. So perhaps we should develop better election procedure. Or perhaps 12-18-24 months would be more feasible.
Just some thoughts.