The Rams would be back to a top producing offense every season. They have Stafford under contract. They just need more quality up front so they can handle these stacked fronts you have to beat in the playoffs.
Also I don't think this QB class is "take a top three guy or else." Rams can still take a shot at a QBotF just try to avoid the ones with red flags this time around.
Fix the lines. Plural. There's roughly 7 OTs who project high in this draft, take one of them up top. Then take a Center in round 3/4 and finish this OL. Keep investing in this defense.
There is no reason why this team can't fill a few key roles in FA then have another strong draft to bring them back to that playoff roster level. Bad teams take QBs and ignore their lines.