My opinion on this is negative, sorry. For example- in wild you will be able to bring more high value items that you can "protect" becouse they are lend and arent really yours - and as you dont care about dying with lend items, it would work like extra death pet.(I would rather lend items from my 2nd acc and go pk with them in wild, than just bring them like regular, not lend ones)
Ps. Sorry for my bad language.