you can create map objects that are maps themselves, thus they are clickable for drilldown.
does that satisfy your needs ?

No, you don't understand.

When objects over 100!

And when need detailed map of the current object.
And when need summary map with all host-groups.

Map-menu - turns to a hell! With many-many items.

it would help if you would note specific location in frontend like "configuration -> maps" or "monitoring -> maps"
i'll make another guess here - are you referring to the dropdown in monitoring -> maps ?

Monitoring Maps

I've:

1) Global map (hostgroups) - over 100
2) Link from hostgroups -> Node Maps (devices and links) - 100* average 2-3
3) Link from device -> Devace Map - Device and clients triggers (aproximately 24)

And number of the maps o_O ......
It's - hell for users

Configuration - to hard, but it's my job