we currently have two window styles called:

'text_list', 'icon_list'

text_list now supports icons (or not icons) in the menu just fine. icon_list is nearly deprecated due to that.

However, there is a need for having menu item styles that can support and layout two lines or three lines of text appropriately (e.g., my music->albums). I've found that this is not possible with a single style due to constraints with setting line height parameters for each scenario.

SO...what I think might be necessary is to have these styles:
'text_list', 'twoline_text_list', 'threeline_text_list'

twoline and threeline would fully inherit from text_list, except for the specific line parameters

this will require some work on both SC and SP sides (and SN?). I'll likely put in some backwards-compatible code in SP to convert any SlimBrowse window from icon_list --> twoline_text_list

this work needs to wait until MP firmware is fully in the can.

will need updates in all skins to support that nomenclature change as well.