[TYPO3-ttnews] Targeting news elements with altMainMarkers??

[Frank]

Hello list,

I want to know whether it is possible to link a specific altMainMarkers 
setting to a specific tt_news content element by using TS.

Let me explain: I have several website (all in the same T3 install) that use 
similar tt_news content elements, that is: a latest news element, an agenda 
etc.
I would like to specify altMainMarkers settings for each of these 'types' of 
elements, so that they are used in the different sites. How can I address a 
specific news element (or a list of news elements) with a specific 
altMainMarkers?

I know I can put specific templates in each of these elements but I don't 
like that solution too much because:

1/ If I have 5 websites, each with a latest news element, I have to put my 
custom latest template in all 5  latest news elements, making it less 
efficient to manage.
2/ In this way you get a big bundle of specific templates
3/ There is something strange with the method of putting a specific template 
in a news element (via plugin options > template) because if you delete it 
later on and then put an updated version, you get a new name, for example: 
myownversion.tmpl becomes myownversion_01.tmpl and then _02 and so on. I did 
this for some time but your fileadmin gets 'polluted' with dozens of 
replicated files. And if you need to move your sites to another server the 
migration (export / import t3d) becomes very tricky.

Kind regards,
Frank Sonck