you could toss wyll the medium armor prof feat and bump up his dex 1 to 14 so you get +2 from dex, +2 from a shield, and can wear medium armor so he is a little more tanky that can make for some fun gameplay, but as others said the 9 str kinda holds him back from wading into melee. (i also wish we could select feats at first level as a toggable campaign option too so to open up some character builds, but thats an aside)
i just want to make another plug here about not being in favor of having players totally revamp origin character stats, classes, weapon proficiencies, domains, etc. as others in the forums have requested, at either origin character creation or once recruited in the world, as i would argue it works against the resources/effort larian has put into creating these origin characters and their personal plotlines. i wouldnt be opposed to allowing the players to make those changes, being pro more player options (altho idk if id take advantage of that feature) or larian adjusting stats themselves down the line, i just think at this stage in ea there are other game mechanics that need attention instead of allocating more time to the integration of these origin characters.
i do think that you should be able to multiclass any recruited companions post lvl 1 as the player desires tho, given the companion has the required attribute scores needed in 5e to multi
