Yah the lack of outputs can be a bit of a pain. But not all is wasted.
It’s not uncommon for EDM pros to do a fair bit of layering to get a nice big phat polished sound (Or interesting complex sounds). That trance piano might actually be made up of 3 different pianos plus a few basic waveforms all filtered to bring out the best bits. You could try the same sort of thing with the virus.
As for EQs, they are merely for maintaining separation (which can also be achieved with panning and levels), getting rid of unwanted frequencies and maybe boosting the nice bits. Technically you don’t need to eq every single track - especially since you’re not working with a recorded instrument. Careful sound design inside the Virus that pays attention to filters, levels and panning should need very little “mixing” by the time it gets to the mixer. So you could send several sounds out from the Virus “as is”. (I generally do very little with the background stuff except for a bit of levelling). You may even find that less is more when it comes to signal processing since overprocessing can even lead to a more anaemic sound if you’ve cut too much.
As such, I would save the first 4 outputs of the virus for your most important sounds (eg synth leads) that need the most attention and the last 2 for background stuff.