Quite simply, the standards for Citizenship have gotten too high. Typically there are between seven and eleven non-abstaining voters in the CdC, and with a three-fourths majority required even the opinions of two people can sink a nomination, with three being virtually inevitable failure. Citizenship is not meant to be a rank for some perceived super-elite. It's meant to be a reward for good posters and contributing members of the community. To that end, 75% is much too stringent. It keeps out perfectly worthy people who in the past would have easily become Civitates.
My proposal:
The following text will be removed from the "Patronization" section of the Syntagma:
If the nominee achieves at least a 75% majority, the nominee shall become a Citizen.
It will be replaced with the following:
If the nominee achieves at least a 60% majority, the nominee shall become a Citizen.
This reduced standard will be retroactively applied to all Citizenship votes held in the past.
I believe that the last clause is necessary to prevent tiresome bureaucracy of holding revotes that will inevitably pass under the more lenient standard.