With a few honourable exceptions, standards keel attachment on modern sailboats are grim. But it seems that most buyers place little priority on a well-engineered keel.Of course, having the answers and applying the answers are two different things. Long ago Nautor/Swan funded a university experiment instrumenting a boat and published the results. Among the results were that rudder loads and keel loads were higher than everyone had assumed. Since then countless rudders and keels have failed as neither ABYC or ABS recommendations changed. In that context, collecting data and generating conclusions is a fool's errand, since the work will be ignored.
As to collecting lots of data, I fear that it will be of limited use. The sensors will be unlikely to record the sail area and how it is sheeted, or the load weight on the boat and its distribution, which can be significant variables on a cruising boat. They can record wind fairly well, but can at best get some proxy measurements for sea state.
So it seem to me that it would be hard to compare data from different boats.