Whether a LED conversion of an old Maglite is worth it, really depends on your intended use.
There are many small / light (weight) / bright / feature filled options in the $50-$100 range (or less) that will likely better meet your daily use needs than a conversion.
On the other hand, I've been really pleased with my $5 Dorcy drop-in LED replacements I used for two 2C Maglites. 30 lumen output isn't even in the ballpark of modern options (but still brighter than the original), and no multiple modes or fancy features, however the cost is right, and lower light output should be offset by longer runtime - A great solution for multi-day power outages around the home.
There are many small / light (weight) / bright / feature filled options in the $50-$100 range (or less) that will likely better meet your daily use needs than a conversion.
On the other hand, I've been really pleased with my $5 Dorcy drop-in LED replacements I used for two 2C Maglites. 30 lumen output isn't even in the ballpark of modern options (but still brighter than the original), and no multiple modes or fancy features, however the cost is right, and lower light output should be offset by longer runtime - A great solution for multi-day power outages around the home.