cap to cap 100/400/900 | wdth 151 | slnt 0/-10 | GRAD 0 | opsz 14

wght: 100

G - right side bearing is too tight
E - right side bearing too tight vs N O D
J - left side bearing too tight
T - left and right side bearings too tight -
S - left and right side bearing stoo tight vs the general spacing

400
T - Even if the basic version of Roboto is like this I think a bit of air for this double T is a good idea

900
K is too dark
S - The middle is too dark
Diagonals in R and M too dark vs the rest
L & A - I am a big fan of letting Y W V and A touch in heavier weights to get better overall rhythm - But in the sample above it bits into L so I wonder if it make sense to give more space to A slightly and more to the right of L so that it can set without kerning without bleeding into each other. What about letting L be a bit darker? It feels weirdly light vs everything else.
O & Q - The rounds of O in 900 get boxier than in the other two weights. I want to suggest modulating that so that the personality stays more consistent. But also the counters of O are brighter and the strokes thinner than I was expecting. Less boxiness will help with the brightness a bit.
O & G - What about letting O & G ( & Q) be slightly less wide? They look a bit stretched vs other caps
Z - Z is crashing into itself and other letters. Z also looks darker than other caps at this weight
N - what about letting N be slightly wider to better match other caps?