Taking over conning tower view and key layout from TM to RFB, possible?

[AntEater]

Hi, after coming back to SH4 after a while, I'm still at odds which major mod to use. While TM is certainly fun, right now I prefer RFB, especially due to its compatibility with natural sinking mechanics.
However, I like the TM key layout better, and also I would like to have TMs modified conning tower view where the player stands in the middle of the compartment, not at the helmsman's station as in the default view which is retained by RFB.
Any way to take over both of these to RFB? I know my way around JGMSE, so I would know how to make my own mini-mod regarding this.
Also, is there a new way to assign keys? Back in the days, I used the SH3 mini tweaker, but I often produced errors since that program is for SH3 originally. Is there one for SH4?
I would especially like to have the conning tower as the default interior and F2, not the control room, as a submarine captain's battle station is the conning tower.