Soundtracks for BG:EE, SoD, BG2:EE, IWD:EE, PST:EE are now available
in the Beamdog store.
In PnP, you never lose your old abilities when dual-classing, but simply never gain xp if you use those abilities for stuff until your new class is higher level. It's well known that the current implementation is simply a work around for the mechanic.
I had an idea the other day....why not tweak the way Dual-classing works.
Instead of removing abilities, just give Dual-class characters a 66%-75% xp penalty, that lasts until their new class is higher then their old class.
While this would slow down advancement of the new class quite a bit, it would also completely remove the downtime that shouldn't exist anyway.