pc side ethernet is always easiest,and u can do 100Mbit speed.
The os3x hdtools will work on the trumpcard,its rdb compliant. just be sure to change the device in hdtools in the icon info to the trumpcard one(IVSscsi.device depending on the card) NOTE the case it may be important.
The 2000 will easily handle a load of isa cards and won't break a sweat doing it.overclocked isa will about the same speed as zorro3 bus on the 3000/4000.
You are right, IRQ's are a pita.. thank god for Autoconfig on the amiga 
there were combo board thats had ide,floppy,sound all in 1 card but they are hard to find.
all of the above i have personally done in the past.. the cdrom share tool is amicdex22.lha off aminet.
use SXSERV16.lha its so so much better and a reliable janus replacement.
look into amems152.lha this would allow you to use amiga ram on the bridgeboard side! (its a ems driver but sadly needs a key.. anyone know the author or have a key?
) if you run a good accelerator with 128MB or so,adding some of that to the pc side does wonders.
you can share the miamidx connection from the amiga side
check out atutilities.lha on aminet,some goodies in that too!
its also possible to read/write to the pc side hd from the amiga side, i dont recall the utility name,but it may be in the above i mentioned.
pcexecute.lha allows you to start programs on the pc side from the amiga.
it was incredible what you could do with these old boards and back in the day it gave access to quite alot of additional software,as well.They are slow as dirt today but its a fun? thing every amigan should try.
I actually had windows 98 running on this super clocked setup as a form of torture for myself. don't believe any faq's that say w98/se will not run on it,because it will. With ems memory,bus overclocking and the diamond speedstar it was almost tolerable and spec'd right with/above some 486 machines on bus test results.
Another option was to solder a 486slc2 cpu in place of the 386 cpu.
enjoy! they are pin for pin compatible.
Mech
@Mechy
Thanks!!
"you can share the miamidx connection from the amiga side
check out atutilities.lha on aminet,some goodies in that too!"
This is exactly what I am looking for. I currently have amitcp/genesis on the amiga side, but I will attempt to try miamidx and atutilities
This will sound crazy, but the problem I had with the Trumpcard Pro and the Fusion Forty was the slot I was using, When I put the A2058 (again with 2megs) in the left most zorroII and the Trumpcard in the second to the left. the scsi gets weird and autoboots sometimes. If I flip them, that is the trumpcard in the left. It works significantly better.
The Fusion Forty can often be very fussy....
I tried out sxserv16, it works well, much better than Janus 2.1, I had to write down the keyboard short cuts....
I am having problems getting amicdex working with my config, I suspect this may be the fusion forty interaction with the trumpcard, I am going to try another scsi. I have a spare dataflyer (same scsi chip as the trumpcard, both are PIO) or borrow a friends GVP scsi (a true dma card). I have a scsi cdrom connected to the PC side cardinal scsi controller, However I would like to remove this, so I can close my case.
I have not tried amems152.lha as my Fusion Forty has 32 meg, I might spare 8 meg for the BB. will update that progress.
I tried out pcexecute. Very cool....
@mechy and crumb thanks for the ideas!