LDAP related questions (object classes/multi values)

Hello,

I have a couple of questions regarding the default integration with a directory.

Multi valued attributes:

As far as I can tell, IG&L does not support multi valued attributes. Which, to me, is a bug. 

Does anyone of you used the standard LDAP connector and use multi value attributes?

I've seen this: How create an AD account with multiple values in proxyAddresses attribute 

Is that the recommended way to add/delete an attribute?

Object Class:

is there any way to add/remove an object class depending on an entitlement?

A brief example:

if a user requests a linux account. The ldap account should add an object class containing the attributes needed by the linux-system. 

I haven't found anything on the community, but maybe my searching skills need to be tuned...

TiA