Domains + Feat Chains

[Andion Isurand]

Just in case this situation occurs, how many of you would implement something akin to the following when it comes to domain powers?

Planning Domain grants Persistant Spell
...if Extend Spell is already taken

Rune Domain grants Magical Artisan (Scribe Scroll)
...if Scribe Scroll is already taken

Domination grants Greater Spell Focus (Enchantment)
...if Spell Focus (Enchantment) is already taken

Time Domain grants Danger Sense
...if Improved Initative is already taken

Elf Domain grants Precise Shot or Far Shot
...if Point Blank Shot is already taken


etc
etc