I'd be cautious in replacing latias with gliscor. Whilst gliscor does have some good synergy with the team, he makes you slightly weaker to threats such as infernape as well as compounding your weakness to latios. Rather if you're looking to beat threats such as terrakion then I would suggest using max speed on latias, as this allows you to get up a reflect before terrakion can attack you. It also helps you revenge latios better, as most run hp fire forcing them to use an imperfect speed iv, so you can outspeed 100% of the time. You may lose a certain amount of bulk, but CB Scizor will still fail to ohko you under reflect, so he's still not that much of a threat.
I do agree with the bulkier spread on breloom, as not only does it allow him to switch in on resisted attacks easier, it also allows you to make the most out of lagging tail, as heatran is a common switch to sableye, so dropping below threats such as this isn't too much of a worry.
Breloom and Conk do serve very similar purposes, although arguably breloom does what this team needs better, as whilst a status'd conk does get a power boost, it does still limit his sweeping potential, whereas brelooms immunity to status is far more welcome