Detail #76: Lack of first person polar question verb marking

Imagine a language with subject congruence on the verb, as well as a somewhat fused polar question marker, here presented in tabular form:

Morphology (only singulars given)

	1p	2p	3p
indicative	-al	-ta	-nu
polar q	--	-tes	-nes

Now, the lack of a polar question marker for the first person is kind of reasonable (although this would possibly make even more sense for, say, ergative subject congruence, as it seems more likely that a speaker would be aware of what transitive actions he is performing, and less certain regarding intransitive actions - 'am I going to die?', 'do I look unkempt?').

However, sometimes you may want to ask a rhetorical question in the first person or a question about your future and so on, and that is where the fun begins. Possible approaches:

• Some kind of case marking (or adposition) marking: me-gen, lead-3pQ the army? 
• Some kind of additional verb phrase: Is-3pQ me, lead-3pQ the strike? (in a language where the complement of 'to be' is marked as an object)
• Some other kind of additional verb phrase: lead-3pQ the strike, I am? Some devoted verb?