Yeah, my own investment style is long-term, low-activity as well. We figured out our desired balance of asset classes (cash-and-equiv, bonds of s/m/l maturity, equities at s/m/l-cap with large split into value and growth, and then two international market funds, one for developed and one for emerging), found low-cost SRI funds in each class (except long-term bonds; for whatever reason, there don't seem to be any, so we ended up just using Vanguard for that), and we basically just make buys every now and then to top up whatever funds are short of target a bit.

In any case, like I said, what we're thinking about is the experience and process of investing -- how people decide what to invest in, and how they go through the process of executing their decisions, not the outcome of the investment decision for good or ill.