Have been researching the 1/2 size children's basses ranging from 32" to 36" and people using them as Baritone Uke Basses using baritone or reentrant (gCea) tuning.
That's not a child's bass scale. Standard short scale is 30", regular is 34-35". Children's bass guitars are sometimes 25-26" scale. There are travel basses at that scale, too, (Beaver Creek has one) and a few people on eBay sell custom 25" scale basses built from electric guitars. My old Supra was 25" and I loved it. You can still find a few vintage basses like Kent and Kay at that scale.
Chording on a bass is much harder than on a uke. The strings are large, widely spaced, and the frets are farther apart, requiring a lot more effort and strength to press and hold for a chord. Bass strings buzz annoyingly if not properly pressed, especially the low-register strings. And bass chords are often murky sounding (as are many really low chords on any instrument).
I do some chording on a 6-string bass, but it's not as easy or fast as on a guitar or uke. If you want low register sounds, it's easier to put the uke output through a pedal that has an octave-lowering effect. Some pedals actually will give you octave down/octave up choices and even add the regular output as a twin sound.
What's the advantage of re-entrant on a bass? I can't imagine any. You'd lose the lowest string. Is it to play chords along with a tenor or other uke but one octave lower? In that case you don't want bass strings on it.
You can also simply replace the baritone uke's strings with the last four strings of a guitar set and get a piccolo bass that is strung like a regular bass (EADG) but one octave higher. Run it through an octaver pedal to drop the pitch and you get a funky acoustic-bass sound.