Our player list doesn't distinguish OF positions - by LF, CF, RF, so we only support generic OF designation.
In terms of supporting a single IF position, we built the tool to fit with most standard setups. It would be almost impossible to account for every variation unfortunately. The position tracking has some fairly sophisticated formulas that help determine where to slot players.
As for the garbage letters, they are really just meant to be place holders since our player list is shorter this year than last year, but we wanted to preserve the formatting of the macros on the draft board - so you can just disregard that. You really shouldn't need to use the drop down anyway as it updates as you type.
Being that this is the official release, we aren't releasing any more functionality changes - just MDP updates at this point. However, once you download it, you can do whatever you want to it to try and make it better except that he keep the macro code password protected to protect the hard work of the developers.