Hmm I could add config entries to an engine for custom entries...
When you add a group to a region, you get a (>) button to go to its panel and set them up. Pass them along with the realm, region and group name to the engine when its started.
Pass it as a dictionary like..
settings[entryname]=value
something like
Code:
CfgElem CustomEntries
{
Setting EntryName TextEntryWidth
Setting EntryName TextEntryWidth
}