From what I've researched 2-3 months ago, because the product has risk, they need to contain the risk, and that means putting caps on the borrow amount, just like they currently have, but if $RUNE increases in price, they should and will be able to increase the cap
But my knowledge might be outdated, need to investigate it a little better.
Sky still has the liquidation risk, don't want to see the market going against me and me having to chase a losing position, that's why I haven't used it...
I've been taking a look at Alchemix, they have a self repaying loan protocol with no risk of liquidation, which is very interesting, might use them, just need to see if the smart contract risk is worth it.
PS: That whole MakerDAO rebranding was so bad... they lost a bunch of community DAO members.