With hindsight, they should have done more for the OL in the draft than taking Watkins in round 5 in 2012, but don't forget how little talent there was on the roster then. There were gaping holes just about everywhere on the team, and apart from the draft they also signed Wells as a FA, who iirc was regarded as the top FA centre that year, had been durable throughout his career and was probably seen as a cornerstone to construct an OL around. Taking an OG in round 5, when you have more holes than pieces in your team, wasn't draft heresy, the pick didn't pan out - it happens. The Pead pick was a bust as well, but remember that Snead was relying on the existing Rams scouts who hadn't identified a decent talent after round 2 in the whole of Spag's tenure.
With hindsight, they should have drafted OL in 2013, but instead they signed what was regarded as the top FA in any position that year to play LOT. With Long's injury history, that was a gamble. It didn't pay off. That happens.
They used the No2 overall pick on a LOT in 2014. With hindsight, they could have gone for a lower ceiling, higher floor guy, but I think it is too early to judge the Robinson pick yet. He was young for his draft class, played in about the most basic college offence imaginable and the plan to bring him along slowly went out of the window when Long got hurt again, which was made worse by the fact that he had taken preseason reps at OG and not OT, oh and his LOT position is probably the toughest OL spot to master. He hasn't been very good so far, but Jackie Slater hadn't even seen the field yet at this stage of his career and he didn't turn out too badly.
Given how their previous FA approach had gone (Long, Wells, Joseph all busts), finally addressing the OL via the draft this year was the right thing to do. With hindsight, should they have done it earlier? Probably, and it's easy to throw out names of good OL talent they didn't take. If they had taken those guys, we might not have had Austin or Ogletree or McDonald or Barron. Would we have been better off? Maybe, maybe not. You can always look at drafts with hindsight and find better players. It's also way too early to judge this year's draft. From what I have seen so far, I really like Havenstein and Brown (provided he is playing on the correct side of the OL) for the future, and I still think Wichmann was a steal in round 6 and will be a stud. I don't think Donnal is strong enough yet, but that doesn't mean that he won't be next year.
With hindsight, they started drafting OL too late, but turning back the clock wasn't an option, and it's better late than never. This franchise has had more than its share of "wait until next year", but most of those were not Snead or Fisher's fault. I wish we were winning this year. I wish we didn't have to "wait until next year" again, but when I look at where we are now in terms of present talent and developing talent compared to where we were when Snead and Fisher arrived, I have only respect for the job that Snead has done. I have great reservations about how Fisher runs his team, both in terms of discipline and in terms of overly conservative offensive game plan, but I still think we could have done a lot worse, and I hated him before we hired him.