Solution to Ptolemaic/Selucid insane expansion?

I posted this response on the thread regarding playing EB under Alexander, however feel it is relevant to EB in general so posted here for discussion by non-alex owning members as it really applies to Secuia/Ptolemaic Empire on RTW/BI/Alex.

Playing EB 1.0 on Alex.. have noticed that the Ptolies are considerably stronger than in BI (Although the 'silver death' effect does still occur at times, mostly for other factions around them). I was thinking of changes such as money scripts and so on, however had another thought:

At present when the Ptolies expand into Seleucia, when they capture a town immediate training (and retraining) of troops is possible as they both use the same faction MIC's. If this were not the case expansion may be more realistic.. i.e. even if Ptolies/Selucids have a massive financial advantage over their enemies, they still need to slow down and produce barracks prior to recruiting, and for a while the troops will be very low in quality.
If pushed back into their own lands they will have immediate access to top quality troops and so easier defence.
Now a way to do this might be if the Ptolemaic Empire (sp) uses the same MIC as the Baktrians, and Selucia uses the same MIC as the Karthies... (just as an example)
I realise this may not be quite as realistic as the EB team planned (and there are likely to be other problems with it that I am not aware of), however it should greatly slow down the Ptolie/Selucid instant domination which, quite frankly, is game ruining at present.

I usually end up playing 'Global Policeman' rather than enjoying myself the way it is at present, and trying to prevent faction extermination. The game just doesn't seem right with 3-4 super factions squabbling over the planet, and as a result usually I end up starting another game by 220BC or so, if not earlier as it gets too frustrating.

Please discuss:idea2: