I've been wanted a rework of the Sound Dues for ages now, in part because of how the Hansa mission to end it does not in fact remove the bonus to Sjælland.
A suggestion was made further up this thread that it could be swapped for a straight tax boost, and that strikes me as utterly sensible. Denmark makes 8 Ducats at game start, of which 3.39 is from taxes so if the estimate of the Dues being about 30% of the Danish income is accurate, a flat Ducat/month would make perfect sense. That would have been the equivalent of only 12 tax development, which is one decent-ish province. Personally I'd add some further events down the line for increasing the amount, at certain technological benchmarks probably.
In comparison, the three events the Pope gets nets him 5 Ducats/year each for a 15 Ducat total, and the five of the Seven Cities ones net a (highly theoretical) total of 50/year.
(The question of course, is why am I arguing for strengthening the filthy silver-thieves at all? It feels vaguely dirty...
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