I am a stats geek and here are some stats I keep to motivate myself, in case others are interested.
Total unique sentences placed (Not total played) which I can get from More Stats window in the Cloze Mastery % section - simple sum of the number of sentences in 0% + 25% + 50% + 75% + 100% mastered table. Would love to see this under “Total” section, in between “played” and “mastered”
Master equivalent # of sentences - this is more obscure and satisfies the economist in me. Basically number of unique sentences weighted by % mastered. (For example, 20 sentences in the 25% would count as 5 (20*.25) and 20 sentences in 75% mastered section would count as 15 (20*.75). Adding them all up weighted this way gets me “mastery equivalent”. I get these number of sentences information from the More Stats - Cloze Mastery section.
Total % = a simple number that shows what % I have played and mastered compared to total possible. I use all sentences except for the reading section. (For French, for example, I get the total as 138,724 when I add up FFT, Legacy FFT, MCW, Random, and Grammar.)
Between the second and third stats, I feel I can “sum up” my progress in 2 numbers.
Just sharing in case there are other stats junkies out there. 
And since there is a lot of real estate in the new dashboard UI, maybe some of these will even get incorporated