[X] Plan Wallet
[X] Eldritch Immersion, if we cannot afford Dual Immersion.
I'd like to present the thesis that the Rite of Absorption forms a potent precedent. Eldritch Immersion is still likely inferior to Dual Immersion, of course- but not as severely so as first appears. With such power at Solomon's behest, probably 8 levels in Eldritch and 6 in Arcanum, compounded within his Sanctum(which he could purchase almost 3 levels of with the 1600 non-doubled XP.), and with appropriate techniques... mightn't he be able to produce vast energy fields himself? Likely, unless Sanctum's compounding is truly gargantuan, this would not suffice to substantially improve his own level, but it ought well enough supply a moderate flow of experience to the less-fortunate members of our class. (And of course, his tripled Arcanum level would make it all the easier for him to perform the task in itself.)
I speak of the Rite of Absorption, and not of Eldritch Immersion, for the others, not out of jealous hording, but as the nature of Solomon's magic might not be suitable enough for that rite, and others might refuse the power of the Eldritch in any case. It is less powerful, but implicitly more general.
Also, since there clearly won't be any more dramatic upheavals in the vote content(the clearly is sarcastic. but there might not be.), perhaps we might as well start debating XP expenditures now.
My present inclination is- where IXP means Immersion XP, and normal XP without a modifier is just XP:
Eldritch 8 (-16666 IXP.)
Arcanum 6 (-7500 IXP)
Sanctum 2 (-750 XP)
Hermes 2 (-500 XP)
Make Comfort's Embrace into a Sanctum/Arcanum Combination Technique (-100 XP by earlier benchmark. Birdsie has previously stated this makes Comfort's Embrace 'More effective and easier to Level.'; 100 XP for any relevant increase to Will generation is a good offer.)
3333 IXP left + 505 unmodified XP...
Hard to say what to do with the rest without seeing what techniques Sanctum, Hermes, and Eldritch unlock. Also depends on if the Connections/Induction discount is applying here; we might want to save the 505 unmodified XP to spend on that instead. Alternatively, we might want to buy a third level of Comfort's Embrace for the extra will, or get some kind of Rite Of Absorption technique(that seems sure to come in handy.); and if there aren't any interesting Techniques, probably we spend the remaining 3333 IXP on 0.15 more Eldritch levels, though it could also provide 0.4 Arcanum levels.