Am I missing something, or are the Speech Perks for investing basically completely ignored in Solstheim? Is there ANY other perk in the game which is essentially ignored and NEGATED by this plug-in? Seems a rather glaring oversight. There are, of course, still opportunities to use speech to persuade or intimidate, but I spent significant perk points to get investment, fencing, and master trader (I can't tell yet if the merchants and smiths have more gold because of Master Trader - they might).
About the only "investment" opportunity I've found so far is the one quest where you can invest in an enterprise to excavate a ruin which was buried in volcanic ash. Which, is kind of cool role-play, but doesn't seem to be based on the Speech perks at all.