The default TMP_FS_SIZ limitation for swupdate image

Hi,
When the down-streaming project (Jupiter) uses CIP swupdate image function, it'll always failed because of the default TMP_FS_SIZ is 500M, except for overriding this default value to the bigger one.
We understand this is one of solution, but another way is: removing size=${TMP_FS_SIZE} in TMP_FS_OPTIONS setting as below

TMP_FS_OPTIONS = "nodev,nosuid,size=${TMP_FS_SIZE},mode=${TMP_FS_MODE}"  

Then the kernel default (50% RAM) will be used. This way can automatically support almost any down-streaming project using CIP swupdate image, of course, if user wants to optimize TMP_FS_SIZ setting, also can custom it. Or any better solution? Thanks.