Don't get the lines on Flash's boots. Always like Kolins's use of thick sole boots with the grips as it seemed more functional. Probably the best look is the old TV Flash costume that didn't look like boots but a part of a flexible costume that would seem better for a runner than boots.
im fine with flash's boots for really the same reason - the cowboys cheerleader boots he was wearing didn't make any sense. at least these look "super hero".
i do think, however, that it would have been a good time to give the flash a better mask. other than batman, he seems to be the best fit for a full mask to protect his skin from lightning fast debris. i especially think a pair of goggles (impulse style? catwoman style?) would have made sense to keep his eyes protected.
also... why the fuck are hal's gloves still white? boo.