Absolutely great mod! I run into one difficulty - I use both your "Wings of the Valkyrie" and Azumatt's HearthBelow mods. That means when I am battling near a base and happen to be over a portal (on the ground if portal is in the HearthBelow, or anywhere on base if I'm in a flying battle), the portal selection screen jumps into my face exactly when I don't need a distraction. Any chance of a flag to check vertical / total distance from the portal? Possibly a line of sight check? Or perhaps just a setting to force a click on the portal before showing the map? Even a switch "turning off" a portal's transmission use until turned on again could help.
No idea what makes most sense given the code and methods available, or what fits best within your present plans - just a circumstance I keep running into when using the mod.