I do have similar wishes when it comes to merc ability buttons (sometimes they just feel backwards on some mercs)… and I may have a possible solution.
While this isn’t the most ideal way of doing this, it might be a solution for you.
You could always try binding say… F5 to rebind all your key bindings to the way to like for fletcher, and bind F6 to rebind those keys back to a normal style for other mercs.
This worked before back on the UT99 engine, I’m not sure if it is still possible or not now.
If so, you may also want to take it a step further and set those binds to F1, F2 and F3.
If you keep Fletcher as main, you’d set F1 to remap to your fletcher bind, and F2 and F3 would change to your default binds for other mercs. If remapping F1, F2 and F3 makes it so you can no longer switch your merc, you may need to add the regular select merc into the new bind as well.
An example…
set input F1 selectmerc1command | set input j say hello! (except you’d put in the binds you actually want)
I don’t know if this is how you do this in DB or not… I really haven’t bothered with key binds since UT99… but give it a try and see!
Edit, oh wow… I just noticed this thread was resurrected from July… so I’m going to link to OP.
@capriciousParsely