Sorc1 is good, but often wastes the potential of the summons…plus sorc summons are REALLY dumb, so without the command skills it gets really bothersome to use them. Imo it’s a viable choice only if you want to focus on pvp.
For PvE I suggest the build with linker 2 and necro that you already said. Linker2 helps just so much your skeletons which, otherwise, would do meh damage while grinding. Plus as others said the combo JP+MM just melt down mobs like butter. Can clear a group of mobs in dungeon with 2 skills,lol.
For stats go for 3:1 int:con imo. Unless you focus pvp and might want a bit more con, but i’m not sure about it honestly.
Imo sorc would be a good choice for the future. If they release 2 more ranks at least ,as they should, then sorc 2 is definitedly a solid addition to a “summoner” army. That said it’s still quite the long shot as a lot of stuff could change based on new ranks, changes in some skills and the introduction of new secret classes. For example if they un-nerf Sage and let us copy skeletons again then 1 rank for me is almost mandatory. Portals, 20 skeletons, aoe atk and ranged block buff ? Yes pls. Warlock 2 is another good choice, but i think that c3 will be quite beast dmg wise and would not make it much worth to take only 2 ranks into it (kinda like ele). But for now the best candidate is still sorc 2 xD