I'd recommend Goth's all factions mod for BI. It's nothing like EB in the scale of effort, but it is a very under-appreciated mod, IMO.

It "fixes" the combat so that it plays more like MTW (or EB or RTR) in speed (kill rates, move speeds, morale etc).

It changes the units and unit skins to be very nice - a lot are shared with IBFD.

It enlarges the map and spices up the factions - so you start out with the Romano-British etc.

It pumps up the hordes and separates the Huns/Vandals more, so they don't cancel each other out.

Above, all it's a very stable mod and not a work in progress, so you should not have any CTDs or weird stuff going on.