Thanks for the reply Dresden
The problem with this, is two-fold. Firstly there is no reason to recruit the samnite hasati or principes. They are very slightly cheaper versions of the same unit, with lower stats. Why would I bother recruiting them?
Secondly this also gives access to the allied cavalry which completely negates the use of equites.
If I had to choose between the aux (With access to lower quality inf, but higher quality cav) or mun (with better inf and worse cav) I think it would be better. Any thoughts from others on this?