It will be nice to make it possible to remove limit for content object name by setting the following setting in site.ini to 0 (zero).

> [ContentSettings]
> ContentObjectNameLimit=0

Solution:

1. Small change in condition block in eZContentClass::contentObjectName() - see patch.
2. Modification in data scheme for column ezcontentobject_name.name from VARCHAR(255) to TEXT regarding recreation of its index.

ALTER TABLE `ezcontentobject_name` DROP INDEX `ezcontentobject_name_name`;
ALTER TABLE `ezcontentobject_name` CHANGE `name` `name` TEXT NULL;
ALTER TABLE `ezcontentobject_name` ADD INDEX `ezcontentobject_name_name` (`name`(255));

Patch for version 2011.5 is applied.