Feature enhancements in UML to LDM transformation

The following two is regarding UML to LDM transformation feature.

a) Right now we cannot specify data type transformation rule. For example, an attribute with property String in UML model need to be transformed to attribute with data type varchar(254) in LDM. can we get such facility to specify in the transformation config file OR elsewhere?. Right now all String data types are converted to Varchar(32k); this is not preferable as it would require large data storage area in physical schema though it might not be really needed.

b) In UML to LDM transformation Is it possible to assign label names in LDM by parsing original attribute or entity names?; eg: an attribute bearing name firstName in UML, is transformed to firstName in LDM; but when we perform LDM to PDM transformation we would like to apply standard abbreviations to various words. In this instance we would like firstName to be transformed to FST_NME; whereas it is not possible now because these two words appear concatenated. So if only we can have a facility to apply transformation rule such as: label of each attribute (note that attributes have name and label properties in LDM ) need to be assigned using attribute name in UML, which has to be parsed at the beginning of a uppercase letter. If this facility is available, then the label will be assigned with name 'first Name' during UML to LDM transformation. And we can use Lable name to be used during LDM to PDM transformation.