Nevill's entry positions during the last summer:
vs New Zealand, Brisbane: DNB, DNB
vs New Zealand, Perth: 5/512, 5/294
vs New Zealand, Adelaide: 5/80, 5/161 (scores 66 in the first dig, not many in the second)
vs West Indies, Hobart: DNB, -
vs West Indies, Melbourne: DNB, DNB
vs West Indies, Sydney: 2/154, -
vs New Zealand, Wellington: 5/299 (makes 30-odd in partnership with a rampaging Voges)
vs New Zealand, Christchurch: 6/464, DNB
Let's, uhh, give him a chance to make some runs first before binning him. Hard to make 'em when you never get to leave the pavilion. I get that he's been sub-par overseas, if not outright bad to date, but at this stage we've got literally no clue how he can do in typical home conditions. He struggled no worse than Khawaja or Burns in SL but doesn't have the nice career average to fall back on because, y'know, the top five spent the entire last summer refusing to let anyone else have a go until the time came for declaration batting.
So in situations where his batting was actually kinda important, he played the innings of the Adelaide Test, failed in the second dig, and didn't convert a start in a ~100 run stand with Voges. Those eight Tests constitute over half of his career, and he batted in a grand total of three meaningful situations across them.
Yeah, his overseas batting hasn't been up to scratch, but when he's also the best gloveman in the team, give him the damn summer.