I’ve been away for many months, though having seen some of the above comments I have felt compelled to write.
Yes, we have enough to be concerned with, with out interfaces and PCs.
YET ~>
The PRIMARY reason I will purchase a few used IPAD for band-members is because of the JAW-DROPPING “WEEKLY” magnificence we are all given by the VST LIVE Devs.
I have become a Steinberg Fan-Boy again after being away for near 2 decades, ALL DUE TO VST LIVE changing everything. (for me).
I too would, in theory, prefer an android app. However, there are VAST technical reasons why, for example, CUBASIS has more feature and is just waaay better on the IPAD.
I believe we all want to keep the DEV’s spirits high. "Focus’ and time almost always winning comes to mind.
And, we have been given a straight-forward ‘no fluff’ answer from the DEVs as well.
I’m taking a moment to recall the scores of "CAN-DO’s, and, "planned’, we’ve had as replies from them !!!-)
ONE EXAMPLE LINK, of the now countless great-a-Live-vibes 
https://forums.steinberg.net/t/feature-requests/792859/413
THERE ARE TECHNICAL REASONS WHY THERE AREN’T MANY MUSIC APPS ON ANDROID OF NOTE. (that’s a generalization of course, I mainly mean, "reliability-comparable’ android apps. Apples to apples.)
It’s too bad about IPAD only… SURE! ~> Though, we want everything to WORK… RIGHT?
Heck, i might even warm to the IPADs as tools doing ONE THING.
NOTE: i do respect people’s finances, that needs be said on all this.
AN ASIDE: I am beginning to think through a LIVE system that doesn’t need, or benefit from a digital mixing console, rather using JUST RME interfaces AND VST LIVE PRO.
AND, down the road, maybe even auto-switching DUAL PCs in case of crash etc. – I better keep working to make money, and for a good Uninterruptible Power Supply, USB powered monitors an/or maybe XREAL or similar AR glasses too!-) The glasses are "almost there’ I believe!
Just starting out on thinking it through and hoping to learn on the “shoulders of giants*-)” by asking and posting here soon-ish. (as a separate topic!)
The initial reasoning being, for band members to do their own mixes, i don’t think i want them to have to go between the digital mixer’s IPAD app, AND VST LIVE Pro’s IPAD app.
VST LIVE PRO - tearfully amazing! I’m thinking about version 1.0 and where we are NOW *-)
best wishes to all
Soon enough: I’ll post in a new topic about VST LIVE PRO and RME interfaces (NO DIGITAL MIXER) in a NEW post, thanks.