Either as a separate gate or as a variation on the standard latch, but the ability to store the signal strength in a latch compactly would be helpful in the creation of a minecart sorting system.

Also, a gate which outputs a specific signal strength rather then using a chest filled with gravel of the right amount would be very nice. You would set the signal strength with the screwdriver.

Meh. Don't really like/use/care about the analog gates.

Until someone proves otherwise, I maintain that analog is not feasible. Say
we added all those gates, what would you do with your adder? There's a
reason computers use digital.

Well for n>8 using comparators as wires would allow for n destination rail lines (for instance) using 75% of the redstone (and 25% of the space) as using digital: that isn't counting the redstone needed for the gates and the space needed for the gates. Obviously if redwire were also updated to transmit the hexidecimal state of the redstone signal then creating large minecart sorting systems, or very large railways becomes much cheaper and easier.

Compact adders would very helpful for larger number of destination rail lines (n>16) and the RS latch allows for the rail line to be of indefinite length.

Since there are 16 states then a single analog RS latch can store 4 bits of binary memory making it the equivalent of 4 digital RS latches.

If you add three additional circuits, Max(0, (A+B) -15), Min((A+B), 15), min(A+1, 15) then making hexidecimal adders becomes extremely compact, and a full redstone computer also much more compact.

But I understand not wanting to work with hexidecimal systems, even if they can do cool things with a lot less redstone.