The details of the loads are not important for regulating the equilibrium point (ESS).
On the other hand, Opportunity Loads are currently being tested and could be available in a few weeks with the next firmware update. The idea is to switch a relay on or off depending on the surplus energy being exported to the grid.
Without passing judgement on this feature, which I have not yet tested, controlling certain loads using Node-RED programming is reliable and highly customisable. However, it requires programming skills and learning the Node-RED environment. Typically, a hot-water cylinder should be heated using surplus PV generation when there is enough of it, and during off-peak hours from the grid when there is not enough. But depending on consumption and the size of the hot-water cylinder, heating during off-peak hours may be unnecessary and counterproductive, because the day’s and the following day’s PV generation will be sufficient. I am curious to see how Victron’s engineers will have solved this problem.
As far as the hot-water cylinder is concerned, solar diverters are available that can perform this function, but why invest in one when a little programming is enough to solve the problem?
As for the EV, I think the Victron charging station integrates perfectly. For the others, controlling them by switching a relay on or off seems to me to be the only solution. So Opportunity Loads could provide an answer.
As for air conditioning, it is not a good idea to cut its power, especially when it is running. It is preferable to control it remotely in order to manage its consumption (telling the indoor units to switch off, switch on, cool or heat). It is not simply a matter of changing a switch. I do not think this first version of Opportunity Loads will include such advanced, non-standardised functionality.
As for the swimming pool, this is a case that could be managed very well by Opportunity Loads, but the usual recommendation is to run it for a certain number of hours regardless of the weather. So on some days it may not run at all. Is that appropriate?