ranking graph

could you add graph line from training and openings like other games?

Isn't there already a graph line from training? :D

no, i can't see it

Hope so. Developing good rating graph options would be very beneficial, and fun to play around with.

#2 There is a graph specific to training, but training (opening, tactics, and coordinate training) does not appear on your main profile, along with your variant progress.

Personally I think that the fairly large number of variants in place including the 3 time control options for standard chess are enough for the main graph.

Its on the left hand side whenever you do trainings or openings.

it is, but it's only a small graph based on your latest results.
it would be nice to see whole training ranking history

The small graph also doesn't let you see what your all-time high/low is.

why just don't make a radio combobox panel to switch rating lines, if they are too many? in this case we could have a puzzle rating curve too.

you solved TheProblem :D