1) the parameters that don't fit with the already observed data should be visibly marked in a sense how much they are away from the observation. That's the most important use of the tool: to show which parameters simply don't match: for each parameter one should assume that others remain the same, then show how much that specific parameter has to be for the observations to match. If the parameter can't be any value with the rest unchanged to produce the observed output, it should be marked as n/a or whatever, otherwise the difference from the nearest possible should be shown.

2) you should allow longer time frame for the simulation (it should be possible to run it for e.g. 12 months).