I get the vague impression from the DDO Wiki banner text alone [
Post #13] (remember I don't have any login credentials to view Discord). The reason behind the idea was because someone had bitten off more than they can chew.
Perhaps for example, they tried to create a needlessly overly complex table structure. Then realised what they had created was unworkable or too complex, etc.
So then some (private, i.e. not visible without login) Discord chat was likely created and the problem hadn't been resolved.
Therefore, to complicate matters further they decided to add those icons and announce a public poll that – slightly ironically – was in fact exclusive to the Discord platform only, requiring credentials just to even see.
Because they had developed a new "experimental table" structure that was likely "not fit for purpose" in the first place, e.g. it had been poorly thought out and implemented. Or perhaps it was a consolidation of far too many items that appeared within the said "experimental table", an such. Leading to chaos and clutter...
For example, "A brainstorm without the storm" is good; the other way around a "A brainstorm without the brain" is not ideal. :-/
Of course that is just healthy speculation. Because the context hasn't been clarified by the OP plus I cannot personally see the Discord content.
Rogue, at least those prototype icons shapes you've produced seem more logical. Given that you also weren't given the proper context to work from either. I'd lean towards your scheme.