Not saying that this isn't true but I disagree. Sure these are all opinions and there's no wrong or right here but I personally don't think most Ampegs even with their gain at full deliver a driven sound. Maybe something like edge of breakup but once again it's IMO not the best kind of preamp to be driven... since it wasn't built for that. Even the amp maker specifically warns you not to do that:widely praised for their bass drive sound.
The main reason why I'm against more bass models is because I understand time limits. The time put into new bass amp sims that I'm pretty sure will not be used much by the majority of people could be used for so many important things like having Preset-Cab Bundles in the Axe-Fx III, which is IMO a high priority feature.
And if people want more bass gear, why not add something that's actually used a lot in the industry like the Sansamp pedal instead of amp models? Still I'll repeat my original point. There are many guitar amp sims that sound amazing with bass like Vox type amps among other things that would most likely break if used with bass guitar in real life. If only people used their ears and didn't care too much about what gear some well known bass players are playing.