I see three different methods of resolving actions such as Hire Help being proposed here. I think we all agree we want a consistent, clear set of rules rather than haphazard kludges or undocumented exceptions, so lets look at each option in turn, using the example of hiring a mid-level Wizard for advice and adventuring.
1) The Classic Method: This is the primary method used under Bjorn in RoE 1 & 2. DDCs must be met in a single roll and retried from scratch if the attempt fails. Additional 'Supportive' Actions can be performed alongside the Primary Action to provide simple numeric bonuses.
Example: Hiring the wizard has a DDC 25. Diplomacy performed with the Tower of Wizardry provides a +6 bonus to the DAC, requiring a 19 total from the roll and Influence.
2) The Sequence Method (Andy): Multiple actions must be performed successfully to achieve the goal. DDCs for these actions are lower individually than the single DDC of the Classic Method.
Comments: Bjorn used this method several times in RoE 1 & 2 with my actions, especially Research actions. However, this method would likely be less well-defined than the Classic Method, as creating a set rule structure for how many actions of what DDC would be needed would be very hard. The DM would have to make judgement calls on a case-by-case basis.
Example: Hiring the wizard requires two to three actions, each with DDC 10-15, depending on the DM's judgement - one would be Hire Help, and the other(s) would depend on how the player goes about the hiring, flavor-wise.
3) The Cumulative Method (Linde): A single DDC is set for a single action type. Multiple attempts can be made, with their results accumulating until the DDC is met.
Comments: My tabletop game uses this for Progress actions when designing new military units and new structures. We carry over 1/2 of the die roll and the full Influence spent each season as an accumulating bonus to future rolls - this lets us make steady progress towards the final result over the course of several seasons. Our DDCs for actions handled this way are typically VERY high by RoE standards - creating a new Legionnaires unit was a DDC 80 and took over a year, but the result was superior to any other shock infantry in the region.
Example: Hiring the wizard has a DDC 25. Three Hire Help actions are performed over two season, resulting in a 10 and a 7 in the first season for a total of 17, and a 14 in the second season, for a successful total of 31.
Once we're all agreed on how we want to perform actions (with Matt having a particularly loud voice in that), working out the details of how to calculate DDCs or actions required will be more straightforward. I like a lot of what Linde's proposed - it may be more 'crunchy' and detailed than is needed, but I don't think that will hurt things, and will help avoid confusion. First, though, I'd like to get people's comments on the larger possibilities that Andy and Linde have suggested. What do you guys think?